L98.4Non-pressure chronic ulcer of skin, not elsewhere classified

L98.4 is the ICD-10-CM diagnosis code for Non-pressure chronic ulcer of skin, not elsewhere classified. It belongs to category L98 (other disorders of skin and subcutaneous tissue, not elsewhere classified), block L80-L99 (other disorders of the skin and subcutaneous tissue) and chapter 12 (diseases of the skin and subcutaneous tissue). It is a header code, so it can't be reported by itself; one of its 8 subcodes must be used instead.

Within L98 (other disorders of skin and subcutaneous tissue, not elsewhere classified), L98.4 is specifically for Non-pressure chronic ulcer of skin, not elsewhere classified. Related codes cover pyogenic granuloma (L98.0), Factitial dermatitis (L98.1), febrile neutrophilic dermatosis [Sweet] (L98.2), eosinophilic cellulitis [Wells] (L98.3), Mucinosis of the skin (L98.5), other infiltrative disorders of the skin and subcutaneous tissue (L98.6), excessive and redundant skin and subcutaneous tissue (L98.7), other specified disorders of the skin and subcutaneous tissue (L98.8) and 2 more.

To report this condition, pick the subcode that matches the documentation: L98.41 (buttock), L98.42 (back), L98.43 (abdomen), L98.44 (chest), L98.45 (neck), L98.46 (face), L98.47 (groin) and L98.49 (sites).

The conditions in its Excludes2 note aren't part of L98.4, but may be coded alongside it if the patient has both: pressure ulcer (pressure area) (L89.-), gangrene (I96), skin infections (L00-L08), specific infections classified to A00-B99 and 2 more.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.