2026 ICD-10-CM Diagnosis Code M67.00Short Achilles tendon (acquired), unspecified ankle

ICD-10-CM Codes›M00–M99›M65-M67›M67

ICD-10-CM M67.00
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M67.00 is a billable ICD-10-CM diagnosis code for short Achilles tendon (acquired), unspecified ankle. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 557 through 558. Coders also document this condition as acquired short Achilles tendon. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Tendon and synovial disorders.

Code Identity

ICD-10-CM Code
M67.00
Billable Status
Yes — Valid for Submission
Code Describes
Short Achilles tendon (acquired), unspecified ankle
Short Description
Short Achilles tendon (acquired), unspecified ankle
Same as the full description in the CMS dataset.
Parent Code
M67.0
Short Achilles tendon (acquired)

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM65-M67Disorders of synovium and tendon
CategoryM67Other disorders of synovium and tendon
This CodeM67.00Short Achilles tendon (acquired), unspecified ankle

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired short Achilles tendon
  • Contracture of Achilles tendon
  • Contracture of right Achilles tendon
  • Short Achilles tendon
  • Tendon contracture

Clinical ClassificationClinical

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

CCSR MUS009
Tendon and synovial disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Heel Injuries and Disorders

Heel problems are common and can be painful. Often, they result from too much stress on your heel bone and the tissues that surround it. That stress can come from:

Read the full article at MedlinePlus

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

Convert M67.00 to ICD-9-CMHistory

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

ICD-9-CM
727.81 Contracture of tendon
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 M67.00Overview

Is M67.00 (Short Achilles tendon (acquired)) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report short Achilles tendon (acquired), unspecified ankle on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M67.00 group to?

When short Achilles tendon (acquired), unspecified ankle is the principal diagnosis on an inpatient stay, it groups to MS-DRG 557, 558, with relative weights from 0.8932 to 1.4869 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M67.00?

Under the General Equivalence Mappings, short Achilles tendon (acquired), unspecified ankle converts to ICD-9-CM 727.81 (contracture of tendon). 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.