2026 ICD-10-CM Diagnosis Code M89.639Osteopathy after poliomyelitis, unspecified forearm

ICD-10-CM Codes›M00–M99›M86-M90›M89

ICD-10-CM M89.639
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M89.639 is a billable ICD-10-CM diagnosis code for osteopathy after poliomyelitis, unspecified forearm. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 564 through 566. Coders also document this condition as poliomyelitis osteopathy of the forearm. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified joint disorders.

Code Identity

ICD-10-CM Code
M89.639
Billable Status
Yes — Valid for Submission
Code Describes
Osteopathy after poliomyelitis, unspecified forearm
Short Description
Osteopathy after poliomyelitis, unspecified forearm
Same as the full description in the CMS dataset.
Parent Code
M89.63
Osteopathy after poliomyelitis, forearm

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM86-M90Other osteopathies
CategoryM89Other disorders of bone
This CodeM89.639Osteopathy after poliomyelitis, unspecified forearm

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Poliomyelitis osteopathy of the forearm

Clinical ClassificationClinical

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

CCSR MUS007
Other specified joint disorders
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Bone Diseases

Your bones help you move, give you shape and support your body. They are living tissues that rebuild constantly throughout your life. During childhood and your teens, your body adds new bone faster than it removes old bone. After about age 20, you can lose bone faster than you make bone.

Read the full article at MedlinePlus

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

Convert M89.639 to ICD-9-CMHistory

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

ICD-9-CM
730.73 Polio osteopathy-forearm
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 M89.639Overview

Is M89.639 (Osteopathy after poliomyelitis, forearm) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report osteopathy after poliomyelitis, unspecified forearm on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M89.639 group to?

When osteopathy after poliomyelitis, unspecified forearm is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 565, 566, with relative weights from 0.7493 to 1.5436 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of M89.639?

Under the General Equivalence Mappings, osteopathy after poliomyelitis, unspecified forearm converts to ICD-9-CM 730.73 (polio osteopathy-forearm). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.