Question 1

What is the ICD-10 code for Crohn's?

Accepted Answer

The ICD-10-CM code for Crohn's (crohn's disease, unspecified, without complications) is K50.90. K50.90 is a billable diagnosis code in the FY2026 ICD-10-CM code set used on Medicare Advantage and commercial claims. It maps to CMS-HCC V28 HCC 80 (Crohn's Disease (Regional Enteritis)) with source-labeled reference coefficients HCC 80 0.550.  Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

Question 2

What is ICD-10 code K50.90?

Accepted Answer

K50.90 is the ICD-10-CM diagnosis code for Crohn's disease, unspecified, without complications. Crohn's disease of unspecified location in the digestive tract without any complications. It belongs to the ICD-10-CM chapter for diseases of the digestive system (k00-k95). K50.90 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. K50.90 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Question 3

Is K50.90 an HCC code?

Accepted Answer

Yes. The final FY2026 CMS mapping file maps K50.90 to HCC 80 (Crohn's Disease (Regional Enteritis)) under CMS-HCC V28 with source-labeled reference coefficients HCC 80 0.550.  Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

Question 4

Is K50.90 billable?

Accepted Answer

Yes. K50.90 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. K50.90 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Question 5

Which HCC does K50.90 map to under V28?

Accepted Answer

K50.90 maps to CMS-HCC V28 HCC 80 (Crohn's Disease (Regional Enteritis)).  The category numbers, labels, and conditions come from the CMS-HCC V28 model file for payment year 2026.

Question 6

What RAF reference is published for K50.90?

Accepted Answer

K50.90 has source-labeled community, non-dual, aged reference coefficients HCC 80 0.550 under CMS-HCC V28 for payment year 2026.  The coefficients come from the CMS V28 relative-factor file. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

Question 7

What is the V28 vs V24 difference for K50.90?

Accepted Answer

For K50.90, the current CMS-HCC V28 result is HCC 80 (Crohn's Disease (Regional Enteritis)). Select a historical effective period before comparing a V24 mapping.  Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

Question 8

What documentation supports K50.90?

Accepted Answer

Use this code when the specific site of Crohn's disease is not documented and no complications are present Review documentation carefully to determine if a more specific site code (small intestine, large intestine, or ileocolonic) can be assigned For K50.90, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. See the MEAT criteria checklist at /meat-criteria for what Monitor, Evaluate, Assess, or Treat looks like in a note. One mnemonic element does not establish that a diagnosis is reportable.

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K50.90 ICD-10-CM Code: Crohn's disease, unspecified, without complications

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K50.90

Is K50.90 an HCC code?

HCC Category Mapping

MEAT review for K50.90

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What This Code Means

Coding Tips

Clinical Significance

Documentation Requirements

Commonly Confused Codes

Child Codes

Code Hierarchy

Also searched as

Work K50.90 in HCC Buddy