ICD-10-CM Code M65: Synovitis and tenosynovitis 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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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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  • M65 - Synovitis and tenosynovitis
    • M65.0 - Abscess of tendon sheath
      • M65.00 - Abscess of tendon sheath, unspecified site
      • M65.01 - Abscess of tendon sheath, shoulder
        • M65.011 - Abscess of tendon sheath, right shoulder
        • M65.012 - Abscess of tendon sheath, left shoulder
        • M65.019 - Abscess of tendon sheath, unspecified shoulder
      • M65.02 - Abscess of tendon sheath, upper arm
        • M65.021 - Abscess of tendon sheath, right upper arm
        • M65.022 - Abscess of tendon sheath, left upper arm
        • M65.029 - Abscess of tendon sheath, unspecified upper arm
      • M65.03 - Abscess of tendon sheath, forearm
        • M65.031 - Abscess of tendon sheath, right forearm
        • M65.032 - Abscess of tendon sheath, left forearm
        • M65.039 - Abscess of tendon sheath, unspecified forearm
      • M65.04 - Abscess of tendon sheath, hand
        • M65.041 - Abscess of tendon sheath, right hand
        • M65.042 - Abscess of tendon sheath, left hand
        • M65.049 - Abscess of tendon sheath, unspecified hand
      • M65.05 - Abscess of tendon sheath, thigh
        • M65.051 - Abscess of tendon sheath, right thigh
        • M65.052 - Abscess of tendon sheath, left thigh
        • M65.059 - Abscess of tendon sheath, unspecified thigh
      • M65.06 - Abscess of tendon sheath, lower leg
        • M65.061 - Abscess of tendon sheath, right lower leg
        • M65.062 - Abscess of tendon sheath, left lower leg
        • M65.069 - Abscess of tendon sheath, unspecified lower leg
      • M65.07 - Abscess of tendon sheath, ankle and foot
        • M65.071 - Abscess of tendon sheath, right ankle and foot
        • M65.072 - Abscess of tendon sheath, left ankle and foot
        • M65.079 - Abscess of tendon sheath, unspecified ankle and foot
      • M65.08 - Abscess of tendon sheath, other site
    • M65.1 - Other infective (teno)synovitis
      • M65.10 - Other infective (teno)synovitis, unspecified site
      • M65.11 - Other infective (teno)synovitis, shoulder
        • M65.111 - Other infective (teno)synovitis, right shoulder
        • M65.112 - Other infective (teno)synovitis, left shoulder
        • M65.119 - Other infective (teno)synovitis, unspecified shoulder
      • M65.12 - Other infective (teno)synovitis, elbow
        • M65.121 - Other infective (teno)synovitis, right elbow
        • M65.122 - Other infective (teno)synovitis, left elbow
        • M65.129 - Other infective (teno)synovitis, unspecified elbow
      • M65.13 - Other infective (teno)synovitis, wrist
        • M65.131 - Other infective (teno)synovitis, right wrist
        • M65.132 - Other infective (teno)synovitis, left wrist
        • M65.139 - Other infective (teno)synovitis, unspecified wrist
      • M65.14 - Other infective (teno)synovitis, hand
        • M65.141 - Other infective (teno)synovitis, right hand
        • M65.142 - Other infective (teno)synovitis, left hand
        • M65.149 - Other infective (teno)synovitis, unspecified hand
      • M65.15 - Other infective (teno)synovitis, hip
        • M65.151 - Other infective (teno)synovitis, right hip
        • M65.152 - Other infective (teno)synovitis, left hip
        • M65.159 - Other infective (teno)synovitis, unspecified hip
      • M65.16 - Other infective (teno)synovitis, knee
        • M65.161 - Other infective (teno)synovitis, right knee
        • M65.162 - Other infective (teno)synovitis, left knee
        • M65.169 - Other infective (teno)synovitis, unspecified knee
      • M65.17 - Other infective (teno)synovitis, ankle and foot
        • M65.171 - Other infective (teno)synovitis, right ankle and foot
        • M65.172 - Other infective (teno)synovitis, left ankle and foot
        • M65.179 - Other infective (teno)synovitis, unspecified ankle and foot
      • M65.18 - Other infective (teno)synovitis, other site
      • M65.19 - Other infective (teno)synovitis, multiple sites
    • M65.2 - Calcific tendinitis
      • M65.20 - Calcific tendinitis, unspecified site
      • M65.22 - Calcific tendinitis, upper arm
        • M65.221 - Calcific tendinitis, right upper arm
        • M65.222 - Calcific tendinitis, left upper arm
        • M65.229 - Calcific tendinitis, unspecified upper arm
      • M65.23 - Calcific tendinitis, forearm
        • M65.231 - Calcific tendinitis, right forearm
        • M65.232 - Calcific tendinitis, left forearm
        • M65.239 - Calcific tendinitis, unspecified forearm
      • M65.24 - Calcific tendinitis, hand
        • M65.241 - Calcific tendinitis, right hand
        • M65.242 - Calcific tendinitis, left hand
        • M65.249 - Calcific tendinitis, unspecified hand
      • M65.25 - Calcific tendinitis, thigh
        • M65.251 - Calcific tendinitis, right thigh
        • M65.252 - Calcific tendinitis, left thigh
        • M65.259 - Calcific tendinitis, unspecified thigh
      • M65.26 - Calcific tendinitis, lower leg
        • M65.261 - Calcific tendinitis, right lower leg
        • M65.262 - Calcific tendinitis, left lower leg
        • M65.269 - Calcific tendinitis, unspecified lower leg
      • M65.27 - Calcific tendinitis, ankle and foot
        • M65.271 - Calcific tendinitis, right ankle and foot
        • M65.272 - Calcific tendinitis, left ankle and foot
        • M65.279 - Calcific tendinitis, unspecified ankle and foot
      • M65.28 - Calcific tendinitis, other site
      • M65.29 - Calcific tendinitis, multiple sites
    • M65.3 - Trigger finger
      • M65.30 - Trigger finger, unspecified finger
      • M65.31 - Trigger thumb
        • M65.311 - Trigger thumb, right thumb
        • M65.312 - Trigger thumb, left thumb
        • M65.319 - Trigger thumb, unspecified thumb
      • M65.32 - Trigger finger, index finger
        • M65.321 - Trigger finger, right index finger
        • M65.322 - Trigger finger, left index finger
        • M65.329 - Trigger finger, unspecified index finger
      • M65.33 - Trigger finger, middle finger
        • M65.331 - Trigger finger, right middle finger
        • M65.332 - Trigger finger, left middle finger
        • M65.339 - Trigger finger, unspecified middle finger
      • M65.34 - Trigger finger, ring finger
        • M65.341 - Trigger finger, right ring finger
        • M65.342 - Trigger finger, left ring finger
        • M65.349 - Trigger finger, unspecified ring finger
      • M65.35 - Trigger finger, little finger
        • M65.351 - Trigger finger, right little finger
        • M65.352 - Trigger finger, left little finger
        • M65.359 - Trigger finger, unspecified little finger
    • M65.4 - Radial styloid tenosynovitis [de Quervain]
    • M65.8 - Other synovitis and tenosynovitis
      • M65.80 - Other synovitis and tenosynovitis, unspecified site
      • M65.81 - Other synovitis and tenosynovitis, shoulder
        • M65.811 - Other synovitis and tenosynovitis, right shoulder
        • M65.812 - Other synovitis and tenosynovitis, left shoulder
        • M65.819 - Other synovitis and tenosynovitis, unspecified shoulder
      • M65.82 - Other synovitis and tenosynovitis, upper arm
        • M65.821 - Other synovitis and tenosynovitis, right upper arm
        • M65.822 - Other synovitis and tenosynovitis, left upper arm
        • M65.829 - Other synovitis and tenosynovitis, unspecified upper arm
      • M65.83 - Other synovitis and tenosynovitis, forearm
        • M65.831 - Other synovitis and tenosynovitis, right forearm
        • M65.832 - Other synovitis and tenosynovitis, left forearm
        • M65.839 - Other synovitis and tenosynovitis, unspecified forearm
      • M65.84 - Other synovitis and tenosynovitis, hand
        • M65.841 - Other synovitis and tenosynovitis, right hand
        • M65.842 - Other synovitis and tenosynovitis, left hand
        • M65.849 - Other synovitis and tenosynovitis, unspecified hand
      • M65.85 - Other synovitis and tenosynovitis, thigh
        • M65.851 - Other synovitis and tenosynovitis, right thigh
        • M65.852 - Other synovitis and tenosynovitis, left thigh
        • M65.859 - Other synovitis and tenosynovitis, unspecified thigh
      • M65.86 - Other synovitis and tenosynovitis, lower leg
        • M65.861 - Other synovitis and tenosynovitis, right lower leg
        • M65.862 - Other synovitis and tenosynovitis, left lower leg
        • M65.869 - Other synovitis and tenosynovitis, unspecified lower leg
      • M65.87 - Other synovitis and tenosynovitis, ankle and foot
        • M65.871 - Other synovitis and tenosynovitis, right ankle and foot
        • M65.872 - Other synovitis and tenosynovitis, left ankle and foot
        • M65.879 - Other synovitis and tenosynovitis, unspecified ankle and foot
      • M65.88 - Other synovitis and tenosynovitis, other site
      • M65.89 - Other synovitis and tenosynovitis, multiple sites
    • M65.9 - Synovitis and tenosynovitis, unspecified
      • M65.90 - Unspecified synovitis and tenosynovitis, unspecified site
      • M65.91 - Unspecified synovitis and tenosynovitis, shoulder
        • M65.911 - Unspecified synovitis and tenosynovitis, right shoulder
        • M65.912 - Unspecified synovitis and tenosynovitis, left shoulder
        • M65.919 - Unspecified synovitis and tenosynovitis, unspecified shoulder
      • M65.92 - Unspecified synovitis and tenosynovitis, upper arm
        • M65.921 - Unspecified synovitis and tenosynovitis, right upper arm
        • M65.922 - Unspecified synovitis and tenosynovitis, left upper arm
        • M65.929 - Unspecified synovitis and tenosynovitis, unspecified upper arm
      • M65.93 - Unspecified synovitis and tenosynovitis, forearm
        • M65.931 - Unspecified synovitis and tenosynovitis, right forearm
        • M65.932 - Unspecified synovitis and tenosynovitis, left forearm
        • M65.939 - Unspecified synovitis and tenosynovitis, unspecified forearm
      • M65.94 - Unspecified synovitis and tenosynovitis, hand
        • M65.941 - Unspecified synovitis and tenosynovitis, right hand
        • M65.942 - Unspecified synovitis and tenosynovitis, left hand
        • M65.949 - Unspecified synovitis and tenosynovitis, unspecified hand
      • M65.95 - Unspecified synovitis and tenosynovitis, thigh
        • M65.951 - Unspecified synovitis and tenosynovitis, right thigh
        • M65.952 - Unspecified synovitis and tenosynovitis, left thigh
        • M65.959 - Unspecified synovitis and tenosynovitis, unspecified thigh
      • M65.96 - Unspecified synovitis and tenosynovitis, lower leg
        • M65.961 - Unspecified synovitis and tenosynovitis, right lower leg
        • M65.962 - Unspecified synovitis and tenosynovitis, left lower leg
        • M65.969 - Unspecified synovitis and tenosynovitis, unspecified lower leg
      • M65.97 - Unspecified synovitis and tenosynovitis, ankle and foot
        • M65.971 - Unspecified synovitis and tenosynovitis, right ankle and foot
        • M65.972 - Unspecified synovitis and tenosynovitis, left ankle and foot
        • M65.979 - Unspecified synovitis and tenosynovitis, unspecified ankle and foot
      • M65.98 - Unspecified synovitis and tenosynovitis, other site
      • M65.99 - Unspecified synovitis and tenosynovitis, multiple sites

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.