2027 ICD-10-CM Diagnosis Code L64.0Drug-induced androgenic alopecia

ICD-10-CM Codes›L00–L99›L60-L75›L64

ICD-10-CM L64.0
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L64.0 is a billable ICD-10-CM diagnosis code for drug-induced androgenic alopecia. 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. Coders also document this condition as diffuse alopecia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Drug induced or toxic related condition and Other specified and unspecified skin disorders.

Code Identity

ICD-10-CM Code
L64.0
Billable Status
Yes — Valid for Submission
Code Describes
Drug-induced androgenic alopecia
Short Description
Drug-induced androgenic alopecia
Same as the full description in the CMS dataset.
Parent Code
L64
Androgenic alopecia

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL60-L75Disorders of skin appendages
CategoryL64Androgenic alopecia
This CodeL64.0Drug-induced androgenic alopecia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Diffuse alopecia
  • Drug-induced androgenic alopecia
  • Drug-induced hair abnormality
  • Drug-related alopecia
  • Endocrine alopecia
  • Male pattern alopecia

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L64.0: its own notes plus those printed at L64, block L60-L75, and Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From L64 Androgenic alopecia applies to 3 codes
  • male-pattern baldness

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block L60-L75 Disorders of skin appendages applies to 85 codes
  • 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.

From Chapter 12 (L00-L99) Diseases of the skin and subcutaneous tissue applies to 1,001 codes
  • 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.-)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ030
Drug induced or toxic related condition
Default principal diagnosis: inpatient Yes · outpatient Yes
CCSR SKN007
Other specified and unspecified skin disorders
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Drug Reactions

Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions, such as drug interactions, side effects, and allergies.

The full article covers:

  • What is a drug interaction?
  • What are side effects?
  • What are drug allergies?
  • How can I stay safe when taking medicines?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert L64.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
704.09 Alopecia NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About L64.0Overview

What is the ICD-10 code for drug-induced androgenic alopecia?

The ICD-10-CM code for drug-induced androgenic alopecia is L64.0 (sometimes written as L640). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is L64.0 (Androgenic alopecia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report drug-induced androgenic alopecia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does L64.0 group to?

When drug-induced androgenic alopecia 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 L64.0 be reported with a code from Q84?

Not as a rule. The Excludes1 note at block L60-L75, which applies to L64.0, 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).

Does L64.0 need an additional code?

When the condition applies, yes. The Use Additional Code note reads: code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5). The additional code is reported after L64.0.