ICD-10-CM 2027
ICD-10 code for sweat glands disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › sweat glands”. Page updated September 29, 2026.
About coding sweat glands disease
The ICD-10-CM code for sweat glands disease is L74.9 (Eccrine sweat disorder, unspecified). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on L74.9.
Within L74, choose L74.9 (Eccrine sweat disorder, unspecified) only when documentation doesn't support a more specific option: miliaria rubra (L74.0), miliaria crystallina (L74.1), miliaria profunda (L74.2), miliaria, unspecified (L74.3), Anhidrosis (L74.4), focal hyperhidrosis (L74.5) and other eccrine sweat disorders (L74.8).
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.
More specific sweat glands disease codes (official index)
- specified NEC L74.8 — Other eccrine sweat disorders
Common questions about sweat glands disease ICD-10 codes
What is the ICD-10 code for sweat glands disease?
- L74.9 — Eccrine sweat disorder, unspecified. More specific codes apply when the documentation supports them: L74.8.
Is L74.9 billable?
- Yes. L74.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L74.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L74.9 as a principal diagnosis.
Is L74.9 a CC or MCC?
- No. L74.9 is neither a CC nor an MCC under MS-DRG v44.0.