Eccrine sweat disorders (L74) ICD-10-CM
The L74 code range covers eccrine sweat disorders with 16 ICD-10-CM diagnosis codes. 13 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
- generalized hyperhidrosis R61
Codes in the L74 Range 16 codes · 13 billable
- L74 Eccrine sweat disordersNon-billable
- L74.0 Miliaria rubra
- L74.1 Miliaria crystallina
- L74.2 Miliaria profunda
- L74.3 Miliaria, unspecified
- L74.4 Anhidrosis
- L74.5 Focal hyperhidrosisNon-billable
- L74.51 Primary focal hyperhidrosisNon-billable
- L74.510 Primary focal hyperhidrosis, axilla
- L74.511 Primary focal hyperhidrosis, face
- L74.512 Primary focal hyperhidrosis, palms
- L74.513 Primary focal hyperhidrosis, soles
- L74.519 Primary focal hyperhidrosis, unspecified
- L74.52 Secondary focal hyperhidrosis
- L74.8 Other eccrine sweat disorders
- L74.9 Eccrine sweat disorder, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the L74 range.
Hypohidrosis
Abnormally diminished or absent perspiration. Both generalized and segmented (reduced or absent sweating in circumscribed locations) forms of the disease are usually associated with other underlying conditions.
Miliaria
A syndrome of cutaneous changes associated with sweat retention and extravasation of sweat at different levels in the skin. Miliaria rubra, or prickly heat, results from apocrine duct obstruction. The sweat then seeps into the epidermis, producing pruritic erythematous papulovesicles. (From Dorland, 27th ed)
About the L74 Code Range
These skin conditions affect sweating. They include miliaria, also called prickly heat, absent sweating, and excessive sweating in a limited area.
The miliaria codes distinguish rubra, crystallina, profunda, and unspecified forms. L74.4 identifies anhidrosis, or absent sweating. Focal hyperhidrosis means excessive sweating in a limited area; its codes distinguish primary from secondary forms.
Primary focal hyperhidrosis is further divided by site: underarm, face, palms, soles, or unspecified. Separate codes identify other eccrine sweat disorders and an unspecified eccrine sweat disorder.
Questions About This Page
How many billable codes are in the L74 range?
Of the 16 codes in this range, 13 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the L74 range classify?
The range classifies eccrine sweat disorders. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
