ICD-10-CM 2027
ICD-10 code for skin lymphocytic infiltrate
From the official ICD-10-CM alphabetic index entry “Infiltrate, infiltration › skin (lymphocytic)”. Page updated September 29, 2026.
About coding skin lymphocytic infiltrate
The ICD-10-CM code for skin lymphocytic infiltrate is L98.6 (Other infiltrative disorders of the skin and subcutaneous tissue).
Within L98, choose L98.6 (Other infiltrative disorders of the skin and subcutaneous tissue) only when documentation doesn't support a more specific option: pyogenic granuloma (L98.0), Factitial dermatitis (L98.1), febrile neutrophilic dermatosis [Sweet] (L98.2), eosinophilic cellulitis [Wells] (L98.3), Non-pressure chronic ulcer of skin, not elsewhere classified (L98.4), Mucinosis of the skin (L98.5), excessive and redundant skin and subcutaneous tissue (L98.7), other specified disorders of the skin and subcutaneous tissue (L98.8) and 2 more.
Don't report L98.6 together with the conditions in its Excludes1 note: hyalinosis cutis et mucosae (E78.89).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
Don't confuse with (Excludes1 for L98.6)
- hyalinosis cutis et mucosae (E78.89)
Common questions about skin lymphocytic infiltrate ICD-10 codes
What is the ICD-10 code for skin lymphocytic infiltrate?
- L98.6 — Other infiltrative disorders of the skin and subcutaneous tissue.
Is L98.6 billable?
- Yes. L98.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L98.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L98.6 as a principal diagnosis.
Is L98.6 a CC or MCC?
- No. L98.6 is neither a CC nor an MCC under MS-DRG v44.0.