ICD-10-CM Code L74.4


Version 2020 Billable Code

Valid for Submission

L74.4 is a billable code used to specify a medical diagnosis of anhidrosis. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code L74.4 might also be used to specify conditions or terms like absence of sweating, alopecia, onychodysplasia, hypohidrosis, deafness ectodermal dysplasia, anhidrosis, anhidrosis, chronic idiopathic anhidrosis, diminished sweating, etc

Short Description:Anhidrosis
Long Description:Anhidrosis

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code L74.4:

Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Hypohidrosis

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code L74.4 are found in the index:


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Absence of sweating
  • Alopecia, onychodysplasia, hypohidrosis, deafness ectodermal dysplasia
  • Anhidrosis
  • Anhidrosis
  • Chronic idiopathic anhidrosis
  • Diminished sweating
  • Ectodermal dysplasia with sweating defect
  • Ectodermal dysplasia with tooth-nail-sweating defect
  • 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 of unknown etiology
  • Hypohidrosis with neurolabyrinthitis
  • Hypohidrosis, enamel hypoplasia, palmoplantar keratoderma, intellectual disability syndrome
  • Hypoplastic enamel-onycholysis-hypohidrosis syndrome
  • O/E - diminished sweating
  • Primary autonomic disorder with acquired anhidrosis
  • Segmental hypohidrosis
  • Tropical anhidrotic asthenia

Clinical Information

  • 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.

Diagnostic Related Groups

The ICD-10 code L74.4 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.


Convert L74.4 to ICD-9

Code Classification

  • Diseases of the skin and subcutaneous tissue (L00–L99)
    • Disorders of skin appendages (L60-L75)
      • Eccrine sweat disorders (L74)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


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.

Sweating a lot is normal when it is hot or when you exercise, are anxious, or have a fever. It also happens during menopause. If you often sweat too much, it's called hyperhidrosis. Causes include thyroid or nervous system disorders, low blood sugar, or another health problem.

Sweating too little, anhidrosis, can be life-threatening because your body can overheat. Causes of anhidrosis include dehydration, burns, and some skin and nerve disorders.

[Learn More]