E11.51
BillableType 2 diabetes mellitus with diabetic peripheral angiopathy without gangrene
HCC Category Mapping
What This Code Means
Type 2 diabetes with narrowing or blockage of blood vessels in the legs and feet without tissue death (gangrene). This reduces blood flow and can cause pain, poor wound healing, or cold extremities.
Coding Tips
- •Confirm that gangrene is NOT present; if gangrene exists, use E11.52 instead
- •Document the location and severity of peripheral angiopathy when available to support treatment decisions
Clinical Significance
Type 2 diabetes mellitus with diabetic peripheral angiopathy without gangrene reflects macrovascular disease where chronic hyperglycemia accelerates atherosclerosis in the peripheral arterial system. This condition causes intermittent claudication, rest pain, and poor wound healing, significantly increasing the risk for ulceration and amputation. Peripheral arterial disease in diabetic patients tends to affect more distal vessels compared to non-diabetic patients, making surgical revascularization more challenging.
Documentation Requirements
- ✓Documentation must confirm peripheral angiopathy as a complication of Type 2 diabetes and explicitly state that gangrene is absent.
- ✓Vascular assessment including ankle-brachial index, pulse examination, or arterial duplex ultrasound findings should be recorded.
- ✓Symptom severity (Fontaine classification or Rutherford category) and treatment plan including medication, exercise therapy, or revascularization referral should be documented.