2026 ICD-10-CM Diagnosis Code M12.551Traumatic arthropathy, right hip

ICD-10-CM Codes›M00–M99›M05-M14›M12

ICD-10-CM M12.551
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

M12.551 is a billable ICD-10-CM diagnosis code for traumatic arthropathy, right hip. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Traumatic arthropathy.

Code Identity

ICD-10-CM Code
M12.551
Billable Status
Yes — Valid for Submission
Code Describes
Traumatic arthropathy, right hip
Short Description
Traumatic arthropathy, right hip
Same as the full description in the CMS dataset.
Parent Code
M12.55
Traumatic arthropathy, hip

Code Classification

ChapterM00–M99Diseases of the musculoskeletal system and connective tissue
SectionM05-M14Inflammatory polyarthropathies
CategoryM12Other and unspecified arthropathy
This CodeM12.551Traumatic arthropathy, right hip

Clinical ClassificationClinical

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

CCSR MUS031
Traumatic arthropathy
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Hip Injuries and Disorders

Your hip is the joint where your femur (thigh bone) meets your pelvis (hip bone). There are two main parts: a ball at the end of the femur, which fits in a socket in the pelvis. Your hip is known as a ball-and-socket joint. This is because you have a ball at the end of your femur, and it fits into a socket in your pelvis.

Read the full article at MedlinePlus

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

Convert M12.551 to ICD-9-CMHistory

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

ICD-9-CM
716.15 Traum arthropathy-pelvis
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 M12.551Overview

Is M12.551 (Traumatic arthropathy, hip) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report traumatic arthropathy, right hip on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does M12.551 group to?

When traumatic arthropathy, right hip 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.

What is the ICD-9 equivalent of M12.551?

Under the General Equivalence Mappings, traumatic arthropathy, right hip converts to ICD-9-CM 716.15 (traum arthropathy-pelvis). 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.