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.
Medical diagnosis code lookup: using ICD-10-CM safely
ICD-10-CM diagnosis codes describe diseases, conditions, symptoms and other reasons for healthcare encounters. Search by code or diagnosis keyword, then verify the result against the current official code set and coding guidelines. A search result alone does not establish the correct code for a claim; specificity, sequencing, exclusions and clinical documentation still matter.
Questions about this free tool
What does ICD-10-CM stand for?
ICD-10-CM is the International Classification of Diseases, Tenth Revision, Clinical Modification used in the United States to report diagnoses and reasons for healthcare encounters.
Is this ICD-10 lookup the complete official code set?
No. It is a curated quick-reference set. The complete current ICD-10-CM code files and official coding guidance should be checked through CMS and other applicable official sources.
Can I bill an ICD-10-CM code based only on a keyword search?
No. The selected diagnosis code must be supported by the clinical documentation and may require additional specificity, sequencing, laterality or other coding-rule review.
Where can I verify current ICD-10-CM codes?
CMS publishes current ICD-10-CM code files and coding resources. The tool page links to the official CMS ICD-10 resource.
ICD-10-CM Basics for Billers
Learn diagnosis-code structure, specificity and the documentation checks that sit behind a code search.
Coding Errors That Lead to Denials
See why code lookup is only one part of documentation-aligned claim quality.
Read the guide →Use the calculator with your own practice data
These tools are free to use and link to. Save the page for recurring monthly review, or share it with the team responsible for billing and revenue-cycle reporting.
View all free tools →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.