ICD-10-CM 2027
ICD-10 code for nigra tinea
From the official ICD-10-CM alphabetic index entry “Tinea (intersecta) (tarsi) › nigra”. Page updated September 29, 2026.
About coding nigra tinea
The ICD-10-CM code for nigra tinea is B36.1 (Tinea nigra).
Within B36 (other superficial mycoses), B36.1 is specifically for tinea nigra. Related codes cover pityriasis versicolor (B36.0), white piedra (B36.2), black piedra (B36.3), other specified superficial mycoses (B36.8) and superficial mycosis, unspecified (B36.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 606 (Minor Skin Disorders with MCC, relative weight 1.5728) and DRG 607 (Minor Skin Disorders without MCC, relative weight 0.8772), in MDC 09 (Diseases and Disorders of the Skin, Subcutaneous Tissue and Breast), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about nigra tinea ICD-10 codes
What is the ICD-10 code for nigra tinea?
- B36.1 — Tinea nigra.
Is B36.1 billable?
- Yes. B36.1 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B36.1 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B36.1 as a principal diagnosis.
Is B36.1 a CC or MCC?
- No. B36.1 is neither a CC nor an MCC under MS-DRG v44.0.