2026 ICD-10-CM Diagnosis Code M92.509Unspecified juvenile osteochondrosis, unspecified leg

ICD-10-CM Codes›M00–M99›M91-M94›M92

ICD-10-CM M92.509
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M92.509 is a billable ICD-10-CM diagnosis code for unspecified juvenile osteochondrosis, unspecified leg. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 553 through 554. Coders also document this condition as angulation deformity of lower leg. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified bone disease and musculoskeletal deformities.

Code Identity

ICD-10-CM Code
M92.509
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified juvenile osteochondrosis, unspecified leg
Short Description
Unspecified juvenile osteochondrosis, unspecified leg
Same as the full description in the CMS dataset.
Parent Code
M92.50
Unspecified juvenile osteochondrosis of tibia and fibula

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM91-M94Chondropathies
CategoryM92Other juvenile osteochondrosis
This CodeM92.509Unspecified juvenile osteochondrosis, unspecified leg

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Angulation deformity of lower leg
  • Juvenile osteochondrosis of os tibiale
  • Varus deformity of tibia

Clinical ClassificationClinical

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

CCSR MUS028
Other specified bone disease and musculoskeletal deformities
Default principal diagnosis: inpatient Yes · outpatient Yes

Code History & ChangesHistory

Replacement M92.509 replaces the following previously assigned code(s):

  • M92.50 - Juvenile osteochondrosis of tibia and fibula, unsp leg
  • M92.50 - Unspecified juvenile osteochondrosis of tibia and fibula
FY 2021AddedAdded to the ICD-10-CM code setEffective October 1, 2020.
FY 2022–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About M92.509Overview

Is M92.509 (Unspecified juvenile osteochondrosis of tibia and fibula) a billable code?

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

What MS-DRG does M92.509 group to?

When unspecified juvenile osteochondrosis, unspecified leg is the principal diagnosis on an inpatient stay, it groups to MS-DRG 553, 554, with relative weights from 0.8301 to 1.2963 depending on complications. Higher weights mean higher Medicare reimbursement.

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.