ICD-10-CM 2027
ICD-10 code for papular myxedema
From the official ICD-10-CM alphabetic index entry “Myxedema (adult) (idiocy) (infantile) (juvenile) › papular”. Page updated September 29, 2026.
About coding papular myxedema
The ICD-10-CM code for papular myxedema is L98.5 (Mucinosis of the skin).
Within L98 (other disorders of skin and subcutaneous tissue, not elsewhere classified), L98.5 is specifically for Mucinosis of the skin. Related codes cover 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), 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.
Don't report L98.5 together with the conditions in its Excludes1 note: focal oral mucinosis (K13.79) and myxedema (E03.9).
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 L98.5)
Common questions about papular myxedema ICD-10 codes
What is the ICD-10 code for papular myxedema?
- L98.5 — Mucinosis of the skin.
Is L98.5 billable?
- Yes. L98.5 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L98.5 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L98.5 as a principal diagnosis.
Is L98.5 a CC or MCC?
- No. L98.5 is neither a CC nor an MCC under MS-DRG v44.0.