2027 ICD-10-CM Diagnosis Code L74.4Anhidrosis
ICD-10-CM Codes›L00–L99›L60-L75›L74
- Billable — Valid for Submission
- Chronic Condition
L74.4 is a billable ICD-10-CM diagnosis code for anhidrosis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Absence of sweating
- Alacrima
- Alopecia, onychodysplasia, hypohidrosis, deafness ectodermal dysplasia
- Anhidrosis
- Chronic idiopathic anhidrosis
- Congenital anomaly of lacrimal gland
- HELIX syndrome
- Hereditary insensitivity to pain with anhidrosis
- Hypohidrosis
- Hypohidrosis co-occurrent and due to disorder of sympathetic nervous system
- Hypohidrosis due to genetic abnormality of eccrine gland structure and function
- Hypohidrosis due to neurological disorder
- Hypohidrosis of unknown etiology
- Hypohidrosis with neurolabyrinthitis
- Hypohidrosis, enamel hypoplasia, palmoplantar keratoderma, intellectual disability syndrome
- Hypoplastic enamel-onycholysis-hypohidrosis syndrome
- Isolated generalized anhidrosis with normal sweat glands
- Primary autonomic disorder with acquired anhidrosis
- Salt-losing nephropathy
- Segmental hypohidrosis
- Tropical anhidrotic asthenia
- Xerostomia
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L74.4: its own notes plus those printed at L74, block L60-L75, and Chapter 12. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Hypohidrosis
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- congenital malformations of integument (Q84.-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- lipomelanotic reticulosis (I89.8)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- viral warts (B07.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name L74.4, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Anhidrosis L74.4
Anidrosis L74.4
Oligohidrosis L74.4
Oligohydrosis L74.4
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
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.
Patient EducationClinical
Sweat
Sweat is a clear, salty liquid produced by glands in your skin. Sweating is how your body cools itself. You sweat mainly under your arms and on your feet and palms. When sweat mixes with bacteria on your skin, it can cause a smell. Bathing regularly and using antiperspirants or deodorants can help control the odor.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L74.4 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L74.4Overview
What is the ICD-10 code for anhidrosis?
The ICD-10-CM code for anhidrosis is L74.4 (sometimes written as L744). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L74.4 (Eccrine sweat disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report anhidrosis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L74.4 group to?
When anhidrosis is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.
Can L74.4 be reported with a code from Q84?
Not as a rule. The Excludes1 note at block L60-L75, which applies to L74.4, lists "congenital malformations of integument (Q84.-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What is the ICD-9 equivalent of L74.4?
Under the General Equivalence Mappings, anhidrosis converts to ICD-9-CM 705.0 (anhidrosis). The mapping is a direct match.
