2027 ICD-10-CM Diagnosis Code L94.6Ainhum

ICD-10-CM Codes›L00–L99›L80-L99›L94

ICD-10-CM L94.6
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

L94.6 is a billable ICD-10-CM diagnosis code for ainhum. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 867 through 869. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified skin disorders.

Code Identity

ICD-10-CM Code
L94.6
Billable Status
Yes — Valid for Submission
Code Describes
Ainhum
Short Description
Ainhum
Same as the full description in the CMS dataset.
Parent Code
L94
Other localized connective tissue disorders

Code Classification

ChapterL00–L99Diseases of the skin and subcutaneous tissue
SectionL80-L99Other disorders of the skin and subcutaneous tissue
CategoryL94Other localized connective tissue disorders
This CodeL94.6Ainhum

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Ainhum
  • Ainhum of fifth toe

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to L94.6: its own notes plus those printed at L94 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.

Excludes1

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

From L94 Other localized connective tissue disorders applies to 9 codes
  • systemic connective tissue disorders (M30-M36)

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.-)

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

Clinical InformationClinical

  • Ainhum

    spontaneous autoamputation of the fourth or fifth toe.

Convert L94.6 to ICD-9-CMHistory

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

ICD-9-CM
136.0 Ainhum
Exact Match The mapping is direct, with no qualifiers.

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 L94.6Overview

What is the ICD-10 code for ainhum?

The ICD-10-CM code for ainhum is L94.6 (sometimes written as L946). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is L94.6 (Other localized connective tissue disorders) a billable code?

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

What MS-DRG does L94.6 group to?

When ainhum is the principal diagnosis on an inpatient stay, it groups to MS-DRG 867, 869, 868, with relative weights from 0.6784 to 2.1855 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of L94.6?

Under the General Equivalence Mappings, ainhum converts to ICD-9-CM 136.0 (ainhum). The mapping is a direct match.