2026 ICD-10-CM Diagnosis Code L60.4Beau's lines

ICD-10-CM Codes›L00–L99›L60-L75›L60

ICD-10-CM L60.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

L60.4 is a billable ICD-10-CM diagnosis code for Beau's lines. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) 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

ICD-10-CM Code
L60.4
Billable Status
Yes — Valid for Submission
Code Describes
Beau's lines
Short Description
Beau's lines
Same as the full description in the CMS dataset.
Parent Code
L60
Nail disorders

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL60-L75Disorders of skin appendages
CategoryL60Nail disorders
This CodeL60.4Beau's lines

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Beau's lines
  • Beau's lines secondary to systemic illness
  • Finding of surface of nail
  • Nail changes associated with systemic disease
  • Ridged nails
  • Transverse nail ridge

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Beau's
      • lines (transverse furrows on fingernails)
    • Furrowed
      • nail (s) (transverse)
    • Line(s)
      • Beau's

Clinical ClassificationClinical

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

CCSR SKN007
Other specified and unspecified skin disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Nail Diseases

Your toenails and fingernails protect the tissues of your toes and fingers. They are made up of layers of a hardened protein called keratin, which is also in your hair and skin. The health of your nails can be a clue to your overall health. Healthy nails are usually smooth and consistent in color.

Read the full article at MedlinePlus

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

Convert L60.4 to ICD-9-CMHistory

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

ICD-9-CM
703.8 Diseases of nail 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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About L60.4Overview

Is L60.4 (Nail disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report Beau's lines on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does L60.4 group to?

When Beau's lines is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, with relative weights from 0.9064 to 1.5132 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of L60.4?

Under the General Equivalence Mappings, Beau's lines converts to ICD-9-CM 703.8 (diseases of nail NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.