ICD-10-CM Code S20: Superficial injury of thorax and Related Diagnosis Codes.


The ICD-10-CM (the International Classification of Diseases, Tenth Revision, Clinical Modification) is a standardized coding system used when classifying diseases and medical conditions. Healthcare providers report these codes on Medical claims when diagnosing patient care.

Explore ICD-10-CM codes, organized by chapters based on body systems and medical conditions, as outlined in the International Classification of Diseases, Tenth Revision, Clinical Modification.

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Eclaims - ICD-10-CM Tabular Code List v1.0.0

A categorized list of ICD-10-CM codes organized by chapters based on body systems or medical conditions, according to the International Classification of Diseases, Tenth Revision, Clinical Modification.

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  • S20 - Superficial injury of thorax
    • S20.0 - Contusion of breast
      • S20.00 - Contusion of breast, unspecified breast
        • S20.00XA - Contusion of breast, unspecified breast, initial encounter
        • S20.00XD - Contusion of breast, unspecified breast, subsequent encounter
        • S20.00XS - Contusion of breast, unspecified breast, sequela
      • S20.01 - Contusion of right breast
        • S20.01XA - Contusion of right breast, initial encounter
        • S20.01XD - Contusion of right breast, subsequent encounter
        • S20.01XS - Contusion of right breast, sequela
      • S20.02 - Contusion of left breast
        • S20.02XA - Contusion of left breast, initial encounter
        • S20.02XD - Contusion of left breast, subsequent encounter
        • S20.02XS - Contusion of left breast, sequela
    • S20.1 - Other and unspecified superficial injuries of breast
      • S20.10 - Unspecified superficial injuries of breast
        • S20.101 - Unspecified superficial injuries of breast, right breast
          • S20.101A - Unspecified superficial injuries of breast, right breast, initial encounter
          • S20.101D - Unspecified superficial injuries of breast, right breast, subsequent encounter
          • S20.101S - Unspecified superficial injuries of breast, right breast, sequela
        • S20.102 - Unspecified superficial injuries of breast, left breast
          • S20.102A - Unspecified superficial injuries of breast, left breast, initial encounter
          • S20.102D - Unspecified superficial injuries of breast, left breast, subsequent encounter
          • S20.102S - Unspecified superficial injuries of breast, left breast, sequela
        • S20.109 - Unspecified superficial injuries of breast, unspecified breast
          • S20.109A - Unspecified superficial injuries of breast, unspecified breast, initial encounter
          • S20.109D - Unspecified superficial injuries of breast, unspecified breast, subsequent encounter
          • S20.109S - Unspecified superficial injuries of breast, unspecified breast, sequela
      • S20.11 - Abrasion of breast
        • S20.111 - Abrasion of breast, right breast
          • S20.111A - Abrasion of breast, right breast, initial encounter
          • S20.111D - Abrasion of breast, right breast, subsequent encounter
          • S20.111S - Abrasion of breast, right breast, sequela
        • S20.112 - Abrasion of breast, left breast
          • S20.112A - Abrasion of breast, left breast, initial encounter
          • S20.112D - Abrasion of breast, left breast, subsequent encounter
          • S20.112S - Abrasion of breast, left breast, sequela
        • S20.119 - Abrasion of breast, unspecified breast
          • S20.119A - Abrasion of breast, unspecified breast, initial encounter
          • S20.119D - Abrasion of breast, unspecified breast, subsequent encounter
          • S20.119S - Abrasion of breast, unspecified breast, sequela
      • S20.12 - Blister (nonthermal) of breast
        • S20.121 - Blister (nonthermal) of breast, right breast
          • S20.121A - Blister (nonthermal) of breast, right breast, initial encounter
          • S20.121D - Blister (nonthermal) of breast, right breast, subsequent encounter
          • S20.121S - Blister (nonthermal) of breast, right breast, sequela
        • S20.122 - Blister (nonthermal) of breast, left breast
          • S20.122A - Blister (nonthermal) of breast, left breast, initial encounter
          • S20.122D - Blister (nonthermal) of breast, left breast, subsequent encounter
          • S20.122S - Blister (nonthermal) of breast, left breast, sequela
        • S20.129 - Blister (nonthermal) of breast, unspecified breast
          • S20.129A - Blister (nonthermal) of breast, unspecified breast, initial encounter
          • S20.129D - Blister (nonthermal) of breast, unspecified breast, subsequent encounter
          • S20.129S - Blister (nonthermal) of breast, unspecified breast, sequela
      • S20.14 - External constriction of part of breast
        • S20.141 - External constriction of part of breast, right breast
          • S20.141A - External constriction of part of breast, right breast, initial encounter
          • S20.141D - External constriction of part of breast, right breast, subsequent encounter
          • S20.141S - External constriction of part of breast, right breast, sequela
        • S20.142 - External constriction of part of breast, left breast
          • S20.142A - External constriction of part of breast, left breast, initial encounter
          • S20.142D - External constriction of part of breast, left breast, subsequent encounter
          • S20.142S - External constriction of part of breast, left breast, sequela
        • S20.149 - External constriction of part of breast, unspecified breast
          • S20.149A - External constriction of part of breast, unspecified breast, initial encounter
          • S20.149D - External constriction of part of breast, unspecified breast, subsequent encounter
          • S20.149S - External constriction of part of breast, unspecified breast, sequela
      • S20.15 - Superficial foreign body of breast
        • S20.151 - Superficial foreign body of breast, right breast
          • S20.151A - Superficial foreign body of breast, right breast, initial encounter
          • S20.151D - Superficial foreign body of breast, right breast, subsequent encounter
          • S20.151S - Superficial foreign body of breast, right breast, sequela
        • S20.152 - Superficial foreign body of breast, left breast
          • S20.152A - Superficial foreign body of breast, left breast, initial encounter
          • S20.152D - Superficial foreign body of breast, left breast, subsequent encounter
          • S20.152S - Superficial foreign body of breast, left breast, sequela
        • S20.159 - Superficial foreign body of breast, unspecified breast
          • S20.159A - Superficial foreign body of breast, unspecified breast, initial encounter
          • S20.159D - Superficial foreign body of breast, unspecified breast, subsequent encounter
          • S20.159S - Superficial foreign body of breast, unspecified breast, sequela
      • S20.16 - Insect bite (nonvenomous) of breast
        • S20.161 - Insect bite (nonvenomous) of breast, right breast
          • S20.161A - Insect bite (nonvenomous) of breast, right breast, initial encounter
          • S20.161D - Insect bite (nonvenomous) of breast, right breast, subsequent encounter
          • S20.161S - Insect bite (nonvenomous) of breast, right breast, sequela
        • S20.162 - Insect bite (nonvenomous) of breast, left breast
          • S20.162A - Insect bite (nonvenomous) of breast, left breast, initial encounter
          • S20.162D - Insect bite (nonvenomous) of breast, left breast, subsequent encounter
          • S20.162S - Insect bite (nonvenomous) of breast, left breast, sequela
        • S20.169 - Insect bite (nonvenomous) of breast, unspecified breast
          • S20.169A - Insect bite (nonvenomous) of breast, unspecified breast, initial encounter
          • S20.169D - Insect bite (nonvenomous) of breast, unspecified breast, subsequent encounter
          • S20.169S - Insect bite (nonvenomous) of breast, unspecified breast, sequela
      • S20.17 - Other superficial bite of breast
        • S20.171 - Other superficial bite of breast, right breast
          • S20.171A - Other superficial bite of breast, right breast, initial encounter
          • S20.171D - Other superficial bite of breast, right breast, subsequent encounter
          • S20.171S - Other superficial bite of breast, right breast, sequela
        • S20.172 - Other superficial bite of breast, left breast
          • S20.172A - Other superficial bite of breast, left breast, initial encounter
          • S20.172D - Other superficial bite of breast, left breast, subsequent encounter
          • S20.172S - Other superficial bite of breast, left breast, sequela
        • S20.179 - Other superficial bite of breast, unspecified breast
          • S20.179A - Other superficial bite of breast, unspecified breast, initial encounter
          • S20.179D - Other superficial bite of breast, unspecified breast, subsequent encounter
          • S20.179S - Other superficial bite of breast, unspecified breast, sequela
    • S20.2 - Contusion of thorax
      • S20.20 - Contusion of thorax, unspecified
        • S20.20XA - Contusion of thorax, unspecified, initial encounter
        • S20.20XD - Contusion of thorax, unspecified, subsequent encounter
        • S20.20XS - Contusion of thorax, unspecified, sequela
      • S20.21 - Contusion of front wall of thorax
        • S20.211 - Contusion of right front wall of thorax
          • S20.211A - Contusion of right front wall of thorax, initial encounter
          • S20.211D - Contusion of right front wall of thorax, subsequent encounter
          • S20.211S - Contusion of right front wall of thorax, sequela
        • S20.212 - Contusion of left front wall of thorax
          • S20.212A - Contusion of left front wall of thorax, initial encounter
          • S20.212D - Contusion of left front wall of thorax, subsequent encounter
          • S20.212S - Contusion of left front wall of thorax, sequela
        • S20.213 - Contusion of bilateral front wall of thorax
          • S20.213A - Contusion of bilateral front wall of thorax, initial encounter
          • S20.213D - Contusion of bilateral front wall of thorax, subsequent encounter
          • S20.213S - Contusion of bilateral front wall of thorax, sequela
        • S20.214 - Contusion of middle front wall of thorax
          • S20.214A - Contusion of middle front wall of thorax, initial encounter
          • S20.214D - Contusion of middle front wall of thorax, subsequent encounter
          • S20.214S - Contusion of middle front wall of thorax, sequela
        • S20.219 - Contusion of unspecified front wall of thorax
          • S20.219A - Contusion of unspecified front wall of thorax, initial encounter
          • S20.219D - Contusion of unspecified front wall of thorax, subsequent encounter
          • S20.219S - Contusion of unspecified front wall of thorax, sequela
      • S20.22 - Contusion of back wall of thorax
        • S20.221 - Contusion of right back wall of thorax
          • S20.221A - Contusion of right back wall of thorax, initial encounter
          • S20.221D - Contusion of right back wall of thorax, subsequent encounter
          • S20.221S - Contusion of right back wall of thorax, sequela
        • S20.222 - Contusion of left back wall of thorax
          • S20.222A - Contusion of left back wall of thorax, initial encounter
          • S20.222D - Contusion of left back wall of thorax, subsequent encounter
          • S20.222S - Contusion of left back wall of thorax, sequela
        • S20.223 - Contusion of bilateral back wall of thorax
          • S20.223A - Contusion of bilateral back wall of thorax, initial encounter
          • S20.223D - Contusion of bilateral back wall of thorax, subsequent encounter
          • S20.223S - Contusion of bilateral back wall of thorax, sequela
        • S20.224 - Contusion of middle back wall of thorax
          • S20.224A - Contusion of middle back wall of thorax, initial encounter
          • S20.224D - Contusion of middle back wall of thorax, subsequent encounter
          • S20.224S - Contusion of middle back wall of thorax, sequela
        • S20.229 - Contusion of unspecified back wall of thorax
          • S20.229A - Contusion of unspecified back wall of thorax, initial encounter
          • S20.229D - Contusion of unspecified back wall of thorax, subsequent encounter
          • S20.229S - Contusion of unspecified back wall of thorax, sequela
    • S20.3 - Other and unspecified superficial injuries of front wall of thorax
      • S20.30 - Unspecified superficial injuries of front wall of thorax
        • S20.301 - Unspecified superficial injuries of right front wall of thorax
          • S20.301A - Unspecified superficial injuries of right front wall of thorax, initial encounter
          • S20.301D - Unspecified superficial injuries of right front wall of thorax, subsequent encounter
          • S20.301S - Unspecified superficial injuries of right front wall of thorax, sequela
        • S20.302 - Unspecified superficial injuries of left front wall of thorax
          • S20.302A - Unspecified superficial injuries of left front wall of thorax, initial encounter
          • S20.302D - Unspecified superficial injuries of left front wall of thorax, subsequent encounter
          • S20.302S - Unspecified superficial injuries of left front wall of thorax, sequela
        • S20.303 - Unspecified superficial injuries of bilateral front wall of thorax
          • S20.303A - Unspecified superficial injuries of bilateral front wall of thorax, initial encounter
          • S20.303D - Unspecified superficial injuries of bilateral front wall of thorax, subsequent encounter
          • S20.303S - Unspecified superficial injuries of bilateral front wall of thorax, sequela
        • S20.304 - Unspecified superficial injuries of middle front wall of thorax
          • S20.304A - Unspecified superficial injuries of middle front wall of thorax, initial encounter
          • S20.304D - Unspecified superficial injuries of middle front wall of thorax, subsequent encounter
          • S20.304S - Unspecified superficial injuries of middle front wall of thorax, sequela
        • S20.309 - Unspecified superficial injuries of unspecified front wall of thorax
          • S20.309A - Unspecified superficial injuries of unspecified front wall of thorax, initial encounter
          • S20.309D - Unspecified superficial injuries of unspecified front wall of thorax, subsequent encounter
          • S20.309S - Unspecified superficial injuries of unspecified front wall of thorax, sequela
      • S20.31 - Abrasion of front wall of thorax
        • S20.311 - Abrasion of right front wall of thorax
          • S20.311A - Abrasion of right front wall of thorax, initial encounter
          • S20.311D - Abrasion of right front wall of thorax, subsequent encounter
          • S20.311S - Abrasion of right front wall of thorax, sequela
        • S20.312 - Abrasion of left front wall of thorax
          • S20.312A - Abrasion of left front wall of thorax, initial encounter
          • S20.312D - Abrasion of left front wall of thorax, subsequent encounter
          • S20.312S - Abrasion of left front wall of thorax, sequela
        • S20.313 - Abrasion of bilateral front wall of thorax
          • S20.313A - Abrasion of bilateral front wall of thorax, initial encounter
          • S20.313D - Abrasion of bilateral front wall of thorax, subsequent encounter
          • S20.313S - Abrasion of bilateral front wall of thorax, sequela
        • S20.314 - Abrasion of middle front wall of thorax
          • S20.314A - Abrasion of middle front wall of thorax, initial encounter
          • S20.314D - Abrasion of middle front wall of thorax, subsequent encounter
          • S20.314S - Abrasion of middle front wall of thorax, sequela
        • S20.319 - Abrasion of unspecified front wall of thorax
          • S20.319A - Abrasion of unspecified front wall of thorax, initial encounter
          • S20.319D - Abrasion of unspecified front wall of thorax, subsequent encounter
          • S20.319S - Abrasion of unspecified front wall of thorax, sequela
      • S20.32 - Blister (nonthermal) of front wall of thorax
        • S20.321 - Blister (nonthermal) of right front wall of thorax
          • S20.321A - Blister (nonthermal) of right front wall of thorax, initial encounter
          • S20.321D - Blister (nonthermal) of right front wall of thorax, subsequent encounter
          • S20.321S - Blister (nonthermal) of right front wall of thorax, sequela
        • S20.322 - Blister (nonthermal) of left front wall of thorax
          • S20.322A - Blister (nonthermal) of left front wall of thorax, initial encounter
          • S20.322D - Blister (nonthermal) of left front wall of thorax, subsequent encounter
          • S20.322S - Blister (nonthermal) of left front wall of thorax, sequela
        • S20.323 - Blister (nonthermal) of bilateral front wall of thorax
          • S20.323A - Blister (nonthermal) of bilateral front wall of thorax, initial encounter
          • S20.323D - Blister (nonthermal) of bilateral front wall of thorax, subsequent encounter
          • S20.323S - Blister (nonthermal) of bilateral front wall of thorax, sequela
        • S20.324 - Blister (nonthermal) of middle front wall of thorax
          • S20.324A - Blister (nonthermal) of middle front wall of thorax, initial encounter
          • S20.324D - Blister (nonthermal) of middle front wall of thorax, subsequent encounter
          • S20.324S - Blister (nonthermal) of middle front wall of thorax, sequela
        • S20.329 - Blister (nonthermal) of unspecified front wall of thorax
          • S20.329A - Blister (nonthermal) of unspecified front wall of thorax, initial encounter
          • S20.329D - Blister (nonthermal) of unspecified front wall of thorax, subsequent encounter
          • S20.329S - Blister (nonthermal) of unspecified front wall of thorax, sequela
      • S20.34 - External constriction of front wall of thorax
        • S20.341 - External constriction of right front wall of thorax
          • S20.341A - External constriction of right front wall of thorax, initial encounter
          • S20.341D - External constriction of right front wall of thorax, subsequent encounter
          • S20.341S - External constriction of right front wall of thorax, sequela
        • S20.342 - External constriction of left front wall of thorax
          • S20.342A - External constriction of left front wall of thorax, initial encounter
          • S20.342D - External constriction of left front wall of thorax, subsequent encounter
          • S20.342S - External constriction of left front wall of thorax, sequela
        • S20.343 - External constriction of bilateral front wall of thorax
          • S20.343A - External constriction of bilateral front wall of thorax, initial encounter
          • S20.343D - External constriction of bilateral front wall of thorax, subsequent encounter
          • S20.343S - External constriction of bilateral front wall of thorax, sequela
        • S20.344 - External constriction of middle front wall of thorax
          • S20.344A - External constriction of middle front wall of thorax, initial encounter
          • S20.344D - External constriction of middle front wall of thorax, subsequent encounter
          • S20.344S - External constriction of middle front wall of thorax, sequela
        • S20.349 - External constriction of unspecified front wall of thorax
          • S20.349A - External constriction of unspecified front wall of thorax, initial encounter
          • S20.349D - External constriction of unspecified front wall of thorax, subsequent encounter
          • S20.349S - External constriction of unspecified front wall of thorax, sequela
      • S20.35 - Superficial foreign body of front wall of thorax
        • S20.351 - Superficial foreign body of right front wall of thorax
          • S20.351A - Superficial foreign body of right front wall of thorax, initial encounter
          • S20.351D - Superficial foreign body of right front wall of thorax, subsequent encounter
          • S20.351S - Superficial foreign body of right front wall of thorax, sequela
        • S20.352 - Superficial foreign body of left front wall of thorax
          • S20.352A - Superficial foreign body of left front wall of thorax, initial encounter
          • S20.352D - Superficial foreign body of left front wall of thorax, subsequent encounter
          • S20.352S - Superficial foreign body of left front wall of thorax, sequela
        • S20.353 - Superficial foreign body of bilateral front wall of thorax
          • S20.353A - Superficial foreign body of bilateral front wall of thorax, initial encounter
          • S20.353D - Superficial foreign body of bilateral front wall of thorax, subsequent encounter
          • S20.353S - Superficial foreign body of bilateral front wall of thorax, sequela
        • S20.354 - Superficial foreign body of middle front wall of thorax
          • S20.354A - Superficial foreign body of middle front wall of thorax, initial encounter
          • S20.354D - Superficial foreign body of middle front wall of thorax, subsequent encounter
          • S20.354S - Superficial foreign body of middle front wall of thorax, sequela
        • S20.359 - Superficial foreign body of unspecified front wall of thorax
          • S20.359A - Superficial foreign body of unspecified front wall of thorax, initial encounter
          • S20.359D - Superficial foreign body of unspecified front wall of thorax, subsequent encounter
          • S20.359S - Superficial foreign body of unspecified front wall of thorax, sequela
      • S20.36 - Insect bite (nonvenomous) of front wall of thorax
        • S20.361 - Insect bite (nonvenomous) of right front wall of thorax
          • S20.361A - Insect bite (nonvenomous) of right front wall of thorax, initial encounter
          • S20.361D - Insect bite (nonvenomous) of right front wall of thorax, subsequent encounter
          • S20.361S - Insect bite (nonvenomous) of right front wall of thorax, sequela
        • S20.362 - Insect bite (nonvenomous) of left front wall of thorax
          • S20.362A - Insect bite (nonvenomous) of left front wall of thorax, initial encounter
          • S20.362D - Insect bite (nonvenomous) of left front wall of thorax, subsequent encounter
          • S20.362S - Insect bite (nonvenomous) of left front wall of thorax, sequela
        • S20.363 - Insect bite (nonvenomous) of bilateral front wall of thorax
          • S20.363A - Insect bite (nonvenomous) of bilateral front wall of thorax, initial encounter
          • S20.363D - Insect bite (nonvenomous) of bilateral front wall of thorax, subsequent encounter
          • S20.363S - Insect bite (nonvenomous) of bilateral front wall of thorax, sequela
        • S20.364 - Insect bite (nonvenomous) of middle front wall of thorax
          • S20.364A - Insect bite (nonvenomous) of middle front wall of thorax, initial encounter
          • S20.364D - Insect bite (nonvenomous) of middle front wall of thorax, subsequent encounter
          • S20.364S - Insect bite (nonvenomous) of middle front wall of thorax, sequela
        • S20.369 - Insect bite (nonvenomous) of unspecified front wall of thorax
          • S20.369A - Insect bite (nonvenomous) of unspecified front wall of thorax, initial encounter
          • S20.369D - Insect bite (nonvenomous) of unspecified front wall of thorax, subsequent encounter
          • S20.369S - Insect bite (nonvenomous) of unspecified front wall of thorax, sequela
      • S20.37 - Other superficial bite of front wall of thorax
        • S20.371 - Other superficial bite of right front wall of thorax
          • S20.371A - Other superficial bite of right front wall of thorax, initial encounter
          • S20.371D - Other superficial bite of right front wall of thorax, subsequent encounter
          • S20.371S - Other superficial bite of right front wall of thorax, sequela
        • S20.372 - Other superficial bite of left front wall of thorax
          • S20.372A - Other superficial bite of left front wall of thorax, initial encounter
          • S20.372D - Other superficial bite of left front wall of thorax, subsequent encounter
          • S20.372S - Other superficial bite of left front wall of thorax, sequela
        • S20.373 - Other superficial bite of bilateral front wall of thorax
          • S20.373A - Other superficial bite of bilateral front wall of thorax, initial encounter
          • S20.373D - Other superficial bite of bilateral front wall of thorax, subsequent encounter
          • S20.373S - Other superficial bite of bilateral front wall of thorax, sequela
        • S20.374 - Other superficial bite of middle front wall of thorax
          • S20.374A - Other superficial bite of middle front wall of thorax, initial encounter
          • S20.374D - Other superficial bite of middle front wall of thorax, subsequent encounter
          • S20.374S - Other superficial bite of middle front wall of thorax, sequela
        • S20.379 - Other superficial bite of unspecified front wall of thorax
          • S20.379A - Other superficial bite of unspecified front wall of thorax, initial encounter
          • S20.379D - Other superficial bite of unspecified front wall of thorax, subsequent encounter
          • S20.379S - Other superficial bite of unspecified front wall of thorax, sequela
    • S20.4 - Other and unspecified superficial injuries of back wall of thorax
      • S20.40 - Unspecified superficial injuries of back wall of thorax
        • S20.401 - Unspecified superficial injuries of right back wall of thorax
          • S20.401A - Unspecified superficial injuries of right back wall of thorax, initial encounter
          • S20.401D - Unspecified superficial injuries of right back wall of thorax, subsequent encounter
          • S20.401S - Unspecified superficial injuries of right back wall of thorax, sequela
        • S20.402 - Unspecified superficial injuries of left back wall of thorax
          • S20.402A - Unspecified superficial injuries of left back wall of thorax, initial encounter
          • S20.402D - Unspecified superficial injuries of left back wall of thorax, subsequent encounter
          • S20.402S - Unspecified superficial injuries of left back wall of thorax, sequela
        • S20.409 - Unspecified superficial injuries of unspecified back wall of thorax
          • S20.409A - Unspecified superficial injuries of unspecified back wall of thorax, initial encounter
          • S20.409D - Unspecified superficial injuries of unspecified back wall of thorax, subsequent encounter
          • S20.409S - Unspecified superficial injuries of unspecified back wall of thorax, sequela
      • S20.41 - Abrasion of back wall of thorax
        • S20.411 - Abrasion of right back wall of thorax
          • S20.411A - Abrasion of right back wall of thorax, initial encounter
          • S20.411D - Abrasion of right back wall of thorax, subsequent encounter
          • S20.411S - Abrasion of right back wall of thorax, sequela
        • S20.412 - Abrasion of left back wall of thorax
          • S20.412A - Abrasion of left back wall of thorax, initial encounter
          • S20.412D - Abrasion of left back wall of thorax, subsequent encounter
          • S20.412S - Abrasion of left back wall of thorax, sequela
        • S20.419 - Abrasion of unspecified back wall of thorax
          • S20.419A - Abrasion of unspecified back wall of thorax, initial encounter
          • S20.419D - Abrasion of unspecified back wall of thorax, subsequent encounter
          • S20.419S - Abrasion of unspecified back wall of thorax, sequela
      • S20.42 - Blister (nonthermal) of back wall of thorax
        • S20.421 - Blister (nonthermal) of right back wall of thorax
          • S20.421A - Blister (nonthermal) of right back wall of thorax, initial encounter
          • S20.421D - Blister (nonthermal) of right back wall of thorax, subsequent encounter
          • S20.421S - Blister (nonthermal) of right back wall of thorax, sequela
        • S20.422 - Blister (nonthermal) of left back wall of thorax
          • S20.422A - Blister (nonthermal) of left back wall of thorax, initial encounter
          • S20.422D - Blister (nonthermal) of left back wall of thorax, subsequent encounter
          • S20.422S - Blister (nonthermal) of left back wall of thorax, sequela
        • S20.429 - Blister (nonthermal) of unspecified back wall of thorax
          • S20.429A - Blister (nonthermal) of unspecified back wall of thorax, initial encounter
          • S20.429D - Blister (nonthermal) of unspecified back wall of thorax, subsequent encounter
          • S20.429S - Blister (nonthermal) of unspecified back wall of thorax, sequela
      • S20.44 - External constriction of back wall of thorax
        • S20.441 - External constriction of right back wall of thorax
          • S20.441A - External constriction of right back wall of thorax, initial encounter
          • S20.441D - External constriction of right back wall of thorax, subsequent encounter
          • S20.441S - External constriction of right back wall of thorax, sequela
        • S20.442 - External constriction of left back wall of thorax
          • S20.442A - External constriction of left back wall of thorax, initial encounter
          • S20.442D - External constriction of left back wall of thorax, subsequent encounter
          • S20.442S - External constriction of left back wall of thorax, sequela
        • S20.449 - External constriction of unspecified back wall of thorax
          • S20.449A - External constriction of unspecified back wall of thorax, initial encounter
          • S20.449D - External constriction of unspecified back wall of thorax, subsequent encounter
          • S20.449S - External constriction of unspecified back wall of thorax, sequela
      • S20.45 - Superficial foreign body of back wall of thorax
        • S20.451 - Superficial foreign body of right back wall of thorax
          • S20.451A - Superficial foreign body of right back wall of thorax, initial encounter
          • S20.451D - Superficial foreign body of right back wall of thorax, subsequent encounter
          • S20.451S - Superficial foreign body of right back wall of thorax, sequela
        • S20.452 - Superficial foreign body of left back wall of thorax
          • S20.452A - Superficial foreign body of left back wall of thorax, initial encounter
          • S20.452D - Superficial foreign body of left back wall of thorax, subsequent encounter
          • S20.452S - Superficial foreign body of left back wall of thorax, sequela
        • S20.459 - Superficial foreign body of unspecified back wall of thorax
          • S20.459A - Superficial foreign body of unspecified back wall of thorax, initial encounter
          • S20.459D - Superficial foreign body of unspecified back wall of thorax, subsequent encounter
          • S20.459S - Superficial foreign body of unspecified back wall of thorax, sequela
      • S20.46 - Insect bite (nonvenomous) of back wall of thorax
        • S20.461 - Insect bite (nonvenomous) of right back wall of thorax
          • S20.461A - Insect bite (nonvenomous) of right back wall of thorax, initial encounter
          • S20.461D - Insect bite (nonvenomous) of right back wall of thorax, subsequent encounter
          • S20.461S - Insect bite (nonvenomous) of right back wall of thorax, sequela
        • S20.462 - Insect bite (nonvenomous) of left back wall of thorax
          • S20.462A - Insect bite (nonvenomous) of left back wall of thorax, initial encounter
          • S20.462D - Insect bite (nonvenomous) of left back wall of thorax, subsequent encounter
          • S20.462S - Insect bite (nonvenomous) of left back wall of thorax, sequela
        • S20.469 - Insect bite (nonvenomous) of unspecified back wall of thorax
          • S20.469A - Insect bite (nonvenomous) of unspecified back wall of thorax, initial encounter
          • S20.469D - Insect bite (nonvenomous) of unspecified back wall of thorax, subsequent encounter
          • S20.469S - Insect bite (nonvenomous) of unspecified back wall of thorax, sequela
      • S20.47 - Other superficial bite of back wall of thorax
        • S20.471 - Other superficial bite of right back wall of thorax
          • S20.471A - Other superficial bite of right back wall of thorax, initial encounter
          • S20.471D - Other superficial bite of right back wall of thorax, subsequent encounter
          • S20.471S - Other superficial bite of right back wall of thorax, sequela
        • S20.472 - Other superficial bite of left back wall of thorax
          • S20.472A - Other superficial bite of left back wall of thorax, initial encounter
          • S20.472D - Other superficial bite of left back wall of thorax, subsequent encounter
          • S20.472S - Other superficial bite of left back wall of thorax, sequela
        • S20.479 - Other superficial bite of unspecified back wall of thorax
          • S20.479A - Other superficial bite of unspecified back wall of thorax, initial encounter
          • S20.479D - Other superficial bite of unspecified back wall of thorax, subsequent encounter
          • S20.479S - Other superficial bite of unspecified back wall of thorax, sequela
    • S20.9 - Superficial injury of unspecified parts of thorax
      • S20.90 - Unspecified superficial injury of unspecified parts of thorax
        • S20.90XA - Unspecified superficial injury of unspecified parts of thorax, initial encounter
        • S20.90XD - Unspecified superficial injury of unspecified parts of thorax, subsequent encounter
        • S20.90XS - Unspecified superficial injury of unspecified parts of thorax, sequela
      • S20.91 - Abrasion of unspecified parts of thorax
        • S20.91XA - Abrasion of unspecified parts of thorax, initial encounter
        • S20.91XD - Abrasion of unspecified parts of thorax, subsequent encounter
        • S20.91XS - Abrasion of unspecified parts of thorax, sequela
      • S20.92 - Blister (nonthermal) of unspecified parts of thorax
        • S20.92XA - Blister (nonthermal) of unspecified parts of thorax, initial encounter
        • S20.92XD - Blister (nonthermal) of unspecified parts of thorax, subsequent encounter
        • S20.92XS - Blister (nonthermal) of unspecified parts of thorax, sequela
      • S20.94 - External constriction of unspecified parts of thorax
        • S20.94XA - External constriction of unspecified parts of thorax, initial encounter
        • S20.94XD - External constriction of unspecified parts of thorax, subsequent encounter
        • S20.94XS - External constriction of unspecified parts of thorax, sequela
      • S20.95 - Superficial foreign body of unspecified parts of thorax
        • S20.95XA - Superficial foreign body of unspecified parts of thorax, initial encounter
        • S20.95XD - Superficial foreign body of unspecified parts of thorax, subsequent encounter
        • S20.95XS - Superficial foreign body of unspecified parts of thorax, sequela
      • S20.96 - Insect bite (nonvenomous) of unspecified parts of thorax
        • S20.96XA - Insect bite (nonvenomous) of unspecified parts of thorax, initial encounter
        • S20.96XD - Insect bite (nonvenomous) of unspecified parts of thorax, subsequent encounter
        • S20.96XS - Insect bite (nonvenomous) of unspecified parts of thorax, sequela
      • S20.97 - Other superficial bite of unspecified parts of thorax
        • S20.97XA - Other superficial bite of unspecified parts of thorax, initial encounter
        • S20.97XD - Other superficial bite of unspecified parts of thorax, subsequent encounter
        • S20.97XS - Other superficial bite of unspecified parts of thorax, sequela

Note: The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) codes are developed and maintained by the Centers for Disease Control and Prevention (CDC). CDC's National Center for Health Statistics (NCHS) is responsible for the clinical modification of ICD-10 for use in the United States. The World Health Organization (WHO), which owns and publishes ICD-10, authorized NCHS to develop ICD-10-CM. All modifications to ICD-10 must conform to WHO's established ICD structure and conventions. All rights are reserved by the respective entities.