E10.622
BillableType 1 diabetes mellitus with other skin ulcer
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is E10.622 an HCC code?
No. E10.622 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
E10.622 is the ICD-10-CM diagnosis code for type 1 diabetes mellitus with other skin ulcer. Type 1 diabetes with an open sore or ulcer on the skin in areas other than the foot, caused by diabetes. E10.622 sits in the ICD-10-CM chapter for endocrine, nutritional and metabolic diseases (e00-e89), within the section covering diabetes mellitus (e08-e13).
E10.622 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.
This code does not map to an HCC in any model. To ensure proper risk adjustment, coders should capture all other documented diabetic complications (neuropathy, nephropathy, peripheral vascular disease) that do map to HCCs. The ulcer itself may indicate the need for provider queries about underlying conditions.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for E10.622 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Specify the anatomical location of the ulcer in documentation to differentiate from foot ulcers
- •Document ulcer characteristics including size, depth, and presence of infection
Clinical Significance
Type 1 diabetes mellitus with other skin ulcer captures non-foot diabetic ulcers that may occur on the legs, trunk, or other body areas due to impaired circulation and delayed wound healing from chronic hyperglycemia. These ulcers indicate systemic vascular compromise and impaired tissue integrity. They require the same rigorous wound care approach as foot ulcers but may have different etiological pathways.
Documentation Requirements
- ✓The record must document a skin ulcer at a location other than the foot in a patient with Type 1 diabetes.
- ✓Providers should specify the anatomical site, dimensions, depth, stage, and presence of infection or necrosis.
- ✓Additional L97 or L98 codes should be assigned for ulcer site specificity.
- ✓The causal relationship to diabetes should be established.