M79.A3
BillableNontraumatic compartment syndrome of abdomen
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is M79.A3 an HCC code?
No. M79.A3 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
M79.A3 is the ICD-10-CM diagnosis code for nontraumatic compartment syndrome of abdomen. A serious condition where pressure builds up in the abdominal muscles and tissues, potentially cutting off blood flow and damaging tissue, without being caused by an injury. M79.A3 sits in the ICD-10-CM chapter for diseases of the musculoskeletal system and connective tissue (m00-m99), within the section covering other soft tissue disorders (m70-m79).
M79.A3 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Document which abdominal compartment is affected if specified (anterior, posterior, or peritoneal).
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for M79.A3 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Document which abdominal compartment is affected if specified (anterior, posterior, or peritoneal)
- •This requires urgent surgical evaluation; coordinate with documentation of any associated conditions