M15-M19Not billable, use a more specific code below
Osteoarthritis (M15-M19)
chapter 13: Diseases of the Musculoskeletal System and Connective Tissue
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Instructional notes
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 M15-M19
M15-M19 can't be used on a claim. Pick a billable code below; grey headings group them.
- M15Polyosteoarthritis
- M15.0Primary generalized (osteo)arthritis
- M15.1Heberden's nodes (with arthropathy)
- M15.2Bouchard's nodes (with arthropathy)
- M15.3Secondary multiple arthritis
- M15.4Erosive (osteo)arthritis
- M15.8Other polyosteoarthritis
- M15.9Polyosteoarthritis, unspecified
- M16Osteoarthritis of hip
- 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
- M17Osteoarthritis of knee
- M17.0Bilateral primary osteoarthritis of knee
- M17.1Unilateral primary osteoarthritis of knee
- M17.10Unilateral primary osteoarthritis, unspecified knee
- M17.11Unilateral primary osteoarthritis, right knee
- M17.12Unilateral primary osteoarthritis, left knee
- M17.2Bilateral post-traumatic osteoarthritis of knee
- M17.3Unilateral post-traumatic osteoarthritis of knee
- M17.30Unilateral post-traumatic osteoarthritis, unspecified knee
- M17.31Unilateral post-traumatic osteoarthritis, right knee
- M17.32Unilateral post-traumatic osteoarthritis, left knee
- M17.4Other bilateral secondary osteoarthritis of knee
- M17.5Other unilateral secondary osteoarthritis of knee
- M17.9Osteoarthritis of knee, unspecified
- M18Osteoarthritis of first carpometacarpal joint
- M18.0Bilateral primary osteoarthritis of first carpometacarpal joints
- M18.1Unilateral primary osteoarthritis of first carpometacarpal joint
- M18.10Unilateral primary osteoarthritis of first carpometacarpal joint, unspecified hand
- M18.11Unilateral primary osteoarthritis of first carpometacarpal joint, right hand
- M18.12Unilateral primary osteoarthritis of first carpometacarpal joint, left hand
- M18.2Bilateral post-traumatic osteoarthritis of first carpometacarpal joints
- M18.3Unilateral post-traumatic osteoarthritis of first carpometacarpal joint
- M18.30Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, unspecified hand
- M18.31Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, right hand
- M18.32Unilateral post-traumatic osteoarthritis of first carpometacarpal joint, left hand
- M18.4Other bilateral secondary osteoarthritis of first carpometacarpal joints
- M18.5Other unilateral secondary osteoarthritis of first carpometacarpal joint
- M18.50Other unilateral secondary osteoarthritis of first carpometacarpal joint, unspecified hand
- M18.51Other unilateral secondary osteoarthritis of first carpometacarpal joint, right hand
- M18.52Other unilateral secondary osteoarthritis of first carpometacarpal joint, left hand
- M18.9Osteoarthritis of first carpometacarpal joint, unspecified
- M19Other and unspecified osteoarthritis
- M19.0Primary osteoarthritis of other joints
- M19.01Primary osteoarthritis, shoulder
- M19.011Primary osteoarthritis, right shoulder
- M19.012Primary osteoarthritis, left shoulder
- M19.019Primary osteoarthritis, unspecified shoulder
- M19.02Primary osteoarthritis, elbow
- M19.021Primary osteoarthritis, right elbow
- M19.022Primary osteoarthritis, left elbow
- M19.029Primary osteoarthritis, unspecified elbow
- M19.03Primary osteoarthritis, wrist
- M19.031Primary osteoarthritis, right wrist
- M19.032Primary osteoarthritis, left wrist
- M19.039Primary osteoarthritis, unspecified wrist
- M19.04Primary osteoarthritis, hand
- M19.041Primary osteoarthritis, right hand
- M19.042Primary osteoarthritis, left hand
- M19.049Primary osteoarthritis, unspecified hand
- M19.07Primary osteoarthritis ankle and foot
- M19.071Primary osteoarthritis, right ankle and foot
- M19.072Primary osteoarthritis, left ankle and foot
- M19.079Primary osteoarthritis, unspecified ankle and foot
- M19.09Primary osteoarthritis, other specified site
- M19.1Post-traumatic osteoarthritis of other joints
- M19.11Post-traumatic osteoarthritis, shoulder
- M19.111Post-traumatic osteoarthritis, right shoulder
- M19.112Post-traumatic osteoarthritis, left shoulder
- M19.119Post-traumatic osteoarthritis, unspecified shoulder
- M19.12Post-traumatic osteoarthritis, elbow
- M19.121Post-traumatic osteoarthritis, right elbow
- M19.122Post-traumatic osteoarthritis, left elbow
- M19.129Post-traumatic osteoarthritis, unspecified elbow
- M19.13Post-traumatic osteoarthritis, wrist
- M19.131Post-traumatic osteoarthritis, right wrist
- M19.132Post-traumatic osteoarthritis, left wrist
- M19.139Post-traumatic osteoarthritis, unspecified wrist
- M19.14Post-traumatic osteoarthritis, hand
- M19.141Post-traumatic osteoarthritis, right hand
- M19.142Post-traumatic osteoarthritis, left hand
- M19.149Post-traumatic osteoarthritis, unspecified hand
- M19.17Post-traumatic osteoarthritis, ankle and foot
- M19.171Post-traumatic osteoarthritis, right ankle and foot
- M19.172Post-traumatic osteoarthritis, left ankle and foot
- M19.179Post-traumatic osteoarthritis, unspecified ankle and foot
- M19.19Post-traumatic osteoarthritis, other specified site
- M19.2Secondary osteoarthritis of other joints
- M19.21Secondary osteoarthritis, shoulder
- M19.211Secondary osteoarthritis, right shoulder
- M19.212Secondary osteoarthritis, left shoulder
- M19.219Secondary osteoarthritis, unspecified shoulder
- M19.22Secondary osteoarthritis, elbow
- M19.221Secondary osteoarthritis, right elbow
- M19.222Secondary osteoarthritis, left elbow
- M19.229Secondary osteoarthritis, unspecified elbow
- M19.23Secondary osteoarthritis, wrist
- M19.231Secondary osteoarthritis, right wrist
- M19.232Secondary osteoarthritis, left wrist
- M19.239Secondary osteoarthritis, unspecified wrist
- M19.24Secondary osteoarthritis, hand
- M19.241Secondary osteoarthritis, right hand
- M19.242Secondary osteoarthritis, left hand
- M19.249Secondary osteoarthritis, unspecified hand
- M19.27Secondary osteoarthritis, ankle and foot
- M19.271Secondary osteoarthritis, right ankle and foot
- M19.272Secondary osteoarthritis, left ankle and foot
- M19.279Secondary osteoarthritis, unspecified ankle and foot
- M19.29Secondary osteoarthritis, other specified site
- M19.9Osteoarthritis, unspecified site
- M19.90Unspecified osteoarthritis, unspecified site
- M19.91Primary osteoarthritis, unspecified site
- M19.92Post-traumatic osteoarthritis, unspecified site
- M19.93Secondary osteoarthritis, unspecified site
M15-M19 MS-DRGs
This code does not group to an MS-DRG as a principal diagnosis.
Other codes that refer to M15-M19
Notes on these codes point to M15-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 MedlinePlus