ICD-10-CM Reference

ICD-10 Code Lookup

Search common ICD-10-CM diagnosis codes by code or keyword, then verify the result against the current official code set before billing.

Search common ICD-10-CM codes

Search this curated starter reference by code or description. It is designed for quick orientation—not as a substitute for the complete current ICD-10-CM code set, coding guidelines, payer policy or clinical documentation review.

How to use it

Enter a code such as I10 or a keyword such as hypertension. If a code is not in the starter reference, use the official CMS files linked below.

Before submitting a claim

Verify code validity for the date of service, required specificity, exclusions, sequencing rules and documentation support.

Enter a code or keyword to search the reference list.

Data note: This on-site lookup contains a curated set of commonly encountered ICD-10-CM reference entries, not the complete code set. CMS publishes the official ICD-10-CM files and states that its 2026 April update applies to encounters through September 30, 2026, with FY 2027 files effective October 1, 2026. Always verify against the current official release. Open CMS ICD-10 resources →

Turn the result into an action plan

Use the tool as a starting point, then request a complimentary billing review for help with denials, A/R, coding workflows and revenue-cycle performance.