L97.509
BillableNon-pressure chronic ulcer of other part of unspecified foot with unspecified severity
HCC Category Mapping
V28HCC 383 — Diabetic Skin Ulcer and Severe Skin Conditions
0.517V24HCC 161 — Chronic Ulcer of Skin, Except Pressure
0.426ESRDHCC 161 — Chronic Ulcer of Skin, Except Pressure
0.000RxHCCHCC 311 — Diabetic and Chronic Skin Ulcer
0.000What This Code Means
A long-lasting open sore on the foot (not from pressure) where the severity level is not specified or documented, affecting an unspecified area of the foot.
Coding Tips
- •Use as a default when severity cannot be determined from documentation
- •Query provider if severity details are available, as more specific codes are preferred
Clinical Significance
This code is used when the severity of the non-pressure chronic ulcer is not specified in the clinical documentation. While it maps to an HCC, coders should query providers for severity details to enable more specific code selection and better clinical documentation. Accurate laterality documentation (unspecified other part of foot) is essential for proper code assignment and tracking wound progression over time.
Documentation Requirements
- ✓Specific anatomic location documented as other part of unspecified foot
- ✓Confirmation that the ulcer is non-pressure in etiology (not caused by pressure/immobility)
- ✓Chronicity established — ulcer present for extended duration or described as chronic
- ✓Current wound assessment including size (length x width x depth in centimeters)
- ✓Provider query attempted for severity details (if available)
- ✓Note: This code should be used only when severity truly cannot be determined from documentation
- ✓Underlying etiology or contributing factors (diabetes, peripheral vascular disease, venous insufficiency)
- ✓Current treatment plan including wound care regimen
Commonly Confused Codes
L97.501 through L97.506 — Specific severity codes at same location; always query provider for severity before defaulting to unspecifiedL97.508 — Other specified severity at same location; use when severity IS documented but does not fit standard categoriesL89.xxx (Pressure ulcer codes) — Pressure ulcers use the L89 category; L97 is specifically for NON-pressure chronic ulcersL97.519 — Same severity but specified as RIGHT side; use laterality-specific code when documentation supports itL97.529 — Same severity but specified as LEFT side; use laterality-specific code when documentation supports itE11.621 (Type 2 diabetes mellitus with foot ulcer) — If ulcer is due to diabetes, code the diabetic complication first and the L97 code as an additional code to specify site and severity
Code Hierarchy
└L97Non-pressure chronic ulcer of lower limb, not elsewhere classified└L97.5Non-pressure chronic ulcer of other part of foot└L97.50Non-pressure chronic ulcer of other part of unspecified foot└L97.509Non-pressure chronic ulcer of other part of unspecified foot with unspecified severity
└L97.509Non-pressure chronic ulcer of other part of unspecified foot with unspecified severity