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ICD-10 Lookup: Search 2026 ICD-10-CM Diagnosis Codes

Look up any of the 74,719 billable ICD-10-CM diagnosis codes for fiscal year 2026 by code, condition, synonym, or clinical abbreviation. Smart Search matches codes with or without the decimal point and understands the terms coders actually type.

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Official CMS FY 2026 datasets Updated October 1, 2025 74,719 billable CM codes

How to Search

  1. By code, with or without the decimal: E11.9, E119, and e11 9 all find the same code. A category like E11 lists its complete code family.
  2. By condition or symptom in plain language: anxiety, low back pain, chest pain.
  3. By synonym or clinical abbreviation: CHF, HTN, CAD, UTI are matched through the synonym layer.
  4. Narrow the results with the Billable Only, Grouped in DRG, and POA Exempt filters.

What You Get in Every Result

  • Valid-for-submission status, so billable codes are separated from header categories at a glance.
  • The matching synonyms under each description whenever a code was found through its synonyms, so you can see why it matched.
  • Chapter and sub-chapter links to browse the neighborhood of every match.
  • One click to the full code page: MS-DRG groups, POA status, Medicare code edits, index terms, and ICD-9 crosswalks.

Popular Lookups

ICD-10-CM Billable Codes by Fiscal Year

The FY 2026 update added 487 new codes, revised 38, and deleted 16. See the ICD-10-CM update guide for the complete list.

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Prefer to browse instead of searching? View all 2026 ICD-10-CM codes by chapter →

ICD-10 Lookup FAQ

How do I look up an ICD-10 code?
Type a code, a condition, or a clinical term in the search box and press Enter. You can enter a full code like E11.9, a partial category like F41, or plain language like "low back pain". Every result links to the full code page with billing details, MS-DRG groups, and coding guidance.
Can I search without the decimal point?
Yes. E119, E11.9, and "e11 9" all return the same code. The lookup recognizes code-shaped searches and normalizes dots and spaces automatically, so codes copied from claims, EHR screens, or superbills work as typed.
Can I search by symptom or clinical abbreviation?
Yes. The search runs against both the official code descriptions and a synonym layer that includes common clinical abbreviations, so CHF finds congestive heart failure codes, HTN finds hypertension, and UTI finds urinary tract infection. When a code matches through a synonym, that synonym is shown under the description in the results.
What does billable mean in the results?
A billable code is coded to its highest level of specificity and is valid on HIPAA-covered claims. Category headers, shown as Not Valid for Submission, group related codes but cannot go on a claim. Use the Billable Only filter to hide the headers.
Why does a code say Not Valid for Submission?
It is a header category that requires more characters. F41, for example, is the anxiety disorders category; claims need a complete code such as F41.1 or F41.9. Open the header code page to see every valid code beneath it.
Is this lookup free and current?
Yes. The lookup is free and searches the complete fiscal year 2026 ICD-10-CM code set, loaded directly from the official CMS release files effective October 1, 2025 through September 30, 2026, including the April addenda when CMS publishes them.

Source data: official FY 2026 ICD-10-CM release files published by the Centers for Medicare & Medicaid Services and the CDC's National Center for Health Statistics. Loaded as published, without editorial changes. Last updated October 1, 2025.