Other and unspecified osteoarthritis (M19) ICD-10-CM
The M19 code range covers other and unspecified osteoarthritis with 72 ICD-10-CM diagnosis codes. 52 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- polyarthritis M15
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Codes in the M19 Range 72 codes · 52 billable
- M19 Other and unspecified osteoarthritisNon-billable
- M19.0 Primary osteoarthritis of other jointsNon-billable
- M19.01 Primary osteoarthritis, shoulderNon-billable
- M19.011 Primary osteoarthritis, right shoulder
- M19.012 Primary osteoarthritis, left shoulder
- M19.019 Primary osteoarthritis, unspecified shoulder
- M19.02 Primary osteoarthritis, elbowNon-billable
- M19.021 Primary osteoarthritis, right elbow
- M19.022 Primary osteoarthritis, left elbow
- M19.029 Primary osteoarthritis, unspecified elbow
- M19.03 Primary osteoarthritis, wristNon-billable
- M19.031 Primary osteoarthritis, right wrist
- M19.032 Primary osteoarthritis, left wrist
- M19.039 Primary osteoarthritis, unspecified wrist
- M19.04 Primary osteoarthritis, handNon-billable
- M19.041 Primary osteoarthritis, right hand
- M19.042 Primary osteoarthritis, left hand
- M19.049 Primary osteoarthritis, unspecified hand
- M19.07 Primary osteoarthritis ankle and footNon-billable
- M19.071 Primary osteoarthritis, right ankle and foot
- M19.072 Primary osteoarthritis, left ankle and foot
- M19.079 Primary osteoarthritis, unspecified ankle and foot
- M19.09 Primary osteoarthritis, other specified site
- M19.1 Post-traumatic osteoarthritis of other jointsNon-billable
- M19.11 Post-traumatic osteoarthritis, shoulderNon-billable
- M19.111 Post-traumatic osteoarthritis, right shoulder
- M19.112 Post-traumatic osteoarthritis, left shoulder
- M19.119 Post-traumatic osteoarthritis, unspecified shoulder
- M19.12 Post-traumatic osteoarthritis, elbowNon-billable
- M19.121 Post-traumatic osteoarthritis, right elbow
- M19.122 Post-traumatic osteoarthritis, left elbow
- M19.129 Post-traumatic osteoarthritis, unspecified elbow
- M19.13 Post-traumatic osteoarthritis, wristNon-billable
- M19.131 Post-traumatic osteoarthritis, right wrist
- M19.132 Post-traumatic osteoarthritis, left wrist
- M19.139 Post-traumatic osteoarthritis, unspecified wrist
- M19.14 Post-traumatic osteoarthritis, handNon-billable
- M19.141 Post-traumatic osteoarthritis, right hand
- M19.142 Post-traumatic osteoarthritis, left hand
- M19.149 Post-traumatic osteoarthritis, unspecified hand
- M19.17 Post-traumatic osteoarthritis, ankle and footNon-billable
- M19.171 Post-traumatic osteoarthritis, right ankle and foot
- M19.172 Post-traumatic osteoarthritis, left ankle and foot
- M19.179 Post-traumatic osteoarthritis, unspecified ankle and foot
- M19.19 Post-traumatic osteoarthritis, other specified site
- M19.2 Secondary osteoarthritis of other jointsNon-billable
- M19.21 Secondary osteoarthritis, shoulderNon-billable
- M19.211 Secondary osteoarthritis, right shoulder
- M19.212 Secondary osteoarthritis, left shoulder
- M19.219 Secondary osteoarthritis, unspecified shoulder
- M19.22 Secondary osteoarthritis, elbowNon-billable
- M19.221 Secondary osteoarthritis, right elbow
- M19.222 Secondary osteoarthritis, left elbow
- M19.229 Secondary osteoarthritis, unspecified elbow
- M19.23 Secondary osteoarthritis, wristNon-billable
- M19.231 Secondary osteoarthritis, right wrist
- M19.232 Secondary osteoarthritis, left wrist
- M19.239 Secondary osteoarthritis, unspecified wrist
- M19.24 Secondary osteoarthritis, handNon-billable
- M19.241 Secondary osteoarthritis, right hand
- M19.242 Secondary osteoarthritis, left hand
- M19.249 Secondary osteoarthritis, unspecified hand
- M19.27 Secondary osteoarthritis, ankle and footNon-billable
- M19.271 Secondary osteoarthritis, right ankle and foot
- M19.272 Secondary osteoarthritis, left ankle and foot
- M19.279 Secondary osteoarthritis, unspecified ankle and foot
- M19.29 Secondary osteoarthritis, other specified site
- M19.9 Osteoarthritis, unspecified siteNon-billable
- M19.90 Unspecified osteoarthritis, unspecified site
- M19.91 Primary osteoarthritis, unspecified site
- M19.92 Post-traumatic osteoarthritis, unspecified site
- M19.93 Secondary osteoarthritis, unspecified site
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the M19 range.
Arthritis
Acute or chronic inflammation of JOINTS.
Osteoarthritis
A progressive, degenerative joint disease, the most common form of arthritis, especially in older persons. The disease is thought to result not from the aging process but from biochemical changes and biomechanical stresses affecting articular cartilage. In the foreign literature it is often called osteoarthrosis deformans.
About the M19 Code Range
This category groups osteoarthritis of the shoulder, elbow, wrist, hand, ankle and foot, as well as other specified or unspecified sites.
The main divisions separate primary osteoarthritis (M19.0), post-traumatic osteoarthritis (M19.1), and secondary osteoarthritis (M19.2). Each then divides by joint or other specified site. The unspecified-site division (M19.9) separates those types from osteoarthritis with neither a type nor a site specified.
Questions About This Page
How many billable codes are in the M19 range?
Of the 72 codes in this range, 52 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.
What does the M19 range classify?
The range classifies other and unspecified osteoarthritis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
