Osteoarthritis of hip
In Osteoarthritis (M15-M19), chapter 13: Diseases of the Musculoskeletal System and Connective Tissue
15 billable codes under M16: none are a CC or MCC; none map to an HCC.
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Instructional notes
Also applies, from Osteoarthritis (M15-M19)
These notes sit on M15-M19 and apply to every code under it, including M16.
Excludes2: not included here, code separately if applicable
- osteoarthritis of spine (M47.-)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Covers site and laterality, acute injury versus chronic musculoskeletal conditions, 7th characters for pathologic fractures, osteoporosis with or without current fracture, and multisystem inflammatory syndrome.
- Site and laterality (page 60)
- Acute traumatic versus chronic or recurrent musculoskeletal conditions (page 61)
- Coding of Pathologic Fractures (page 61)
- Osteoporosis (page 61)
- Multisystem Inflammatory Syndrome (page 62)
All codes under M16
M16 can't be used on a claim. Pick a billable code below; grey headings group them.
- M16.0Bilateral primary osteoarthritis of hip
- M16.1Unilateral primary osteoarthritis of hip
- M16.10Unilateral primary osteoarthritis, unspecified hip
- M16.11Unilateral primary osteoarthritis, right hip
- M16.12Unilateral primary osteoarthritis, left hip
- M16.2Bilateral osteoarthritis resulting from hip dysplasia
- M16.3Unilateral osteoarthritis resulting from hip dysplasia
- M16.30Unilateral osteoarthritis resulting from hip dysplasia, unspecified hip
- M16.31Unilateral osteoarthritis resulting from hip dysplasia, right hip
- M16.32Unilateral osteoarthritis resulting from hip dysplasia, left hip
- M16.4Bilateral post-traumatic osteoarthritis of hip
- M16.5Unilateral post-traumatic osteoarthritis of hip
- M16.50Unilateral post-traumatic osteoarthritis, unspecified hip
- M16.51Unilateral post-traumatic osteoarthritis, right hip
- M16.52Unilateral post-traumatic osteoarthritis, left hip
- M16.6Other bilateral secondary osteoarthritis of hip
- M16.7Other unilateral secondary osteoarthritis of hip
- M16.9Osteoarthritis of hip, unspecified
M16 MS-DRGs
As the principal diagnosis, all 15 billable codes under M16 group to MS-DRG 553 or 554 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
Other codes that refer to M16
Notes on these codes point to M16.
- M15 Excludes1: bilateral involvement of single joint (M16-M19)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Osteoarthritis
Osteoarthritis, sometimes called OA, is a type of arthritis that only affects the joints, usually in the hands, knees, hips, neck, and lower back. It's the most common type of arthritis.
Read more about osteoarthritis on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.