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Tools and references for healthcare EDI, provider lookup, payer IDs, claim forms, and medical code research.

NPI Lookup

Search current National Provider Identifier records using the eClaims NPI lookup tool.

Payer ID Code List

Search payer ID codes used for electronic claim submission.

Interactive HCFA-1500 Guide

Explore claim form fields and see how they relate to X12 837P claim data.

ICD-10-CM Code Lookup

Search ICD-10-CM diagnosis codes using the eClaims lookup tool.

ICD-10-CM Code Explorer

Browse ICD-10-CM codes by chapter, body system, or medical condition category.

NPI Validation

Verify whether 10-digit or 15-position NPI numbers pass check digit validation.

Explore Healthcare EDI Articles

Learn ANSI X12 transactions, claim workflows, HCFA-1500 mappings, payer communications, and healthcare EDI best practices.

ANSI X12 837P - 5010 1000A NM1 Submitter Name

May 21, 2026

Learn how the 1000A NM1 Submitter Name segment works in the ANSI X12 837P 5010 healthcare claim transaction, including submitter identifiers, ETIN values, clearinghouse workflows, and practical implementation examples.

ANSI X12 837P - 4010 1000A NM1 Submitter Name

May 21, 2026

Learn how the 1000A NM1 Submitter Name segment works in the ANSI X12 837P 4010 healthcare claim transaction, including submitter identifiers, ETIN values, clearinghouse workflows, and practical implementation examples.

ANSI X12 837P - 4010 BHT Beginning of Hierarchical Transaction

May 08, 2026

Learn how the ANSI X12 837P 4010 BHT segment identifies and tracks healthcare claim transactions, including hierarchical structure codes, transaction purpose, and BHT03 usage.

ANSI X12 837P - 5010 BHT Beginning of Hierarchical Transaction

May 08, 2026

Learn how the ANSI X12 837P 5010 BHT segment identifies and tracks healthcare claim transactions, including hierarchical structure codes, transaction purpose, and BHT03 usage.

ANSI X12 837P - 4010 ST & SE Transaction Set Header & Trailer

May 07, 2026

Learn how the ST and SE segments define transaction set boundaries in the ANSI X12 837P 4010 format, including control numbers, segment counts, and validation rules.

ANSI X12 837P - 5010 ST & SE Transaction Set Header & Trailer