ICD-10 Code for Osteoarthritis
The ICD-10-CM code for osteoarthritis is M19.90 — Unspecified osteoarthritis, unspecified site. This is the code the Alphabetic Index gives for osteoarthritis with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
BillableUnspecified
M19.90 is billable but unspecified. If the documentation names a type, site or cause, one of the more specific codes below is likely expected.
Which osteoarthritis code should you use?
The Alphabetic Index lists 52 codes under Osteoarthritis. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| ankle | M19.07 | Primary osteoarthritis ankle and foot | not billable |
| elbow | M19.02 | Primary osteoarthritis, elbow | not billable |
| foot joint | M19.07 | Primary osteoarthritis ankle and foot | not billable |
| generalized | M15.9 | Polyosteoarthritis, unspecified | |
| hand joint | M19.04 | Primary osteoarthritis, hand | not billable |
| hip | M16.9 | Osteoarthritis of hip, unspecified | |
| knee | M17.9 | Osteoarthritis of knee, unspecified | |
| post-traumatic NEC | M19.92 | Post-traumatic osteoarthritis, unspecified site | |
| primary | M19.91 | Primary osteoarthritis, unspecified site | |
| secondary | M19.93 | Secondary osteoarthritis, unspecified site | |
| shoulder | M19.01 | Primary osteoarthritis, shoulder | not billable |
| specified site NEC | M19.09 | Primary osteoarthritis, other specified site | |
| wrist | M19.03 | Primary osteoarthritis, wrist | not billable |
Osteoarthritis ankle
Osteoarthritis elbow
Osteoarthritis foot joint
Osteoarthritis generalized
Osteoarthritis hand joint
Osteoarthritis hip
| bilateral | M16.0 | Bilateral primary osteoarthritis of hip | |
| due to hip dysplasia | M16.3 | Unilateral osteoarthritis resulting from hip dysplasia | not billable |
| primary | M16.1 | Unilateral primary osteoarthritis of hip | not billable |
| unilateral | M16.1 | Unilateral primary osteoarthritis of hip | not billable |
| bilateral › due to hip dysplasia | M16.2 | Bilateral osteoarthritis resulting from hip dysplasia | |
| bilateral › post-traumatic | M16.4 | Bilateral post-traumatic osteoarthritis of hip | |
| bilateral › secondary | M16.6 | Other bilateral secondary osteoarthritis of hip | |
| due to hip dysplasia › bilateral | M16.2 | Bilateral osteoarthritis resulting from hip dysplasia | |
| primary › bilateral | M16.0 | Bilateral primary osteoarthritis of hip | |
| unilateral › due to hip dysplasia | M16.3 | Unilateral osteoarthritis resulting from hip dysplasia | not billable |
| unilateral › post-traumatic | M16.5 | Unilateral post-traumatic osteoarthritis of hip | not billable |
| unilateral › primary | M16.1 | Unilateral primary osteoarthritis of hip | not billable |
| unilateral › secondary NEC | M16.7 | Other unilateral secondary osteoarthritis of hip |
Osteoarthritis interphalangeal
Osteoarthritis knee
| bilateral | M17.0 | Bilateral primary osteoarthritis of knee | |
| primary | M17.1 | Unilateral primary osteoarthritis of knee | not billable |
| unilateral | M17.1 | Unilateral primary osteoarthritis of knee | not billable |
| bilateral › post-traumatic | M17.2 | Bilateral post-traumatic osteoarthritis of knee | |
| bilateral › secondary | M17.4 | Other bilateral secondary osteoarthritis of knee | |
| primary › bilateral | M17.0 | Bilateral primary osteoarthritis of knee | |
| unilateral › post-traumatic | M17.3 | Unilateral post-traumatic osteoarthritis of knee | not billable |
| unilateral › primary | M17.1 | Unilateral primary osteoarthritis of knee | not billable |
| unilateral › secondary NEC | M17.5 | Other unilateral secondary osteoarthritis of knee |
Osteoarthritis post-traumatic NEC
| ankle | M19.17 | Post-traumatic osteoarthritis, ankle and foot | not billable |
| elbow | M19.12 | Post-traumatic osteoarthritis, elbow | not billable |
| foot joint | M19.17 | Post-traumatic osteoarthritis, ankle and foot | not billable |
| hand joint | M19.14 | Post-traumatic osteoarthritis, hand | not billable |
| hip | M16.5 | Unilateral post-traumatic osteoarthritis of hip | not billable |
| knee | M17.3 | Unilateral post-traumatic osteoarthritis of knee | not billable |
| shoulder | M19.11 | Post-traumatic osteoarthritis, shoulder | not billable |
| specified site NEC | M19.19 | Post-traumatic osteoarthritis, other specified site | |
| wrist | M19.13 | Post-traumatic osteoarthritis, wrist | not billable |
| hand joint › first carpometacarpal joint | M18.3 | Unilateral post-traumatic osteoarthritis of first carpometacarpal joint | not billable |
| hip › bilateral | M16.4 | Bilateral post-traumatic osteoarthritis of hip | |
| knee › bilateral | M17.2 | Bilateral post-traumatic osteoarthritis of knee | |
| hand joint › first carpometacarpal joint › bilateral | M18.2 | Bilateral post-traumatic osteoarthritis of first carpometacarpal joints |
Osteoarthritis primary
| ankle | M19.07 | Primary osteoarthritis ankle and foot | not billable |
| elbow | M19.02 | Primary osteoarthritis, elbow | not billable |
| foot joint | M19.07 | Primary osteoarthritis ankle and foot | not billable |
| hand joint | M19.04 | Primary osteoarthritis, hand | not billable |
| hip | M16.1 | Unilateral primary osteoarthritis of hip | not billable |
| knee | M17.1 | Unilateral primary osteoarthritis of knee | not billable |
| multiple sites | M15.9 | Polyosteoarthritis, unspecified | |
| shoulder | M19.01 | Primary osteoarthritis, shoulder | not billable |
| specified site NEC | M19.09 | Primary osteoarthritis, other specified site | |
| wrist | M19.03 | Primary osteoarthritis, wrist | not billable |
| hand joint › first carpometacarpal joint | M18.1 | Unilateral primary osteoarthritis of first carpometacarpal joint | not billable |
| hip › bilateral | M16.0 | Bilateral primary osteoarthritis of hip | |
| knee › bilateral | M17.0 | Bilateral primary osteoarthritis of knee | |
| hand joint › first carpometacarpal joint › bilateral | M18.0 | Bilateral primary osteoarthritis of first carpometacarpal joints |
Osteoarthritis secondary
| ankle | M19.27 | Secondary osteoarthritis, ankle and foot | not billable |
| elbow | M19.22 | Secondary osteoarthritis, elbow | not billable |
| foot joint | M19.27 | Secondary osteoarthritis, ankle and foot | not billable |
| hand joint | M19.24 | Secondary osteoarthritis, hand | not billable |
| hip | M16.7 | Other unilateral secondary osteoarthritis of hip | |
| knee | M17.5 | Other unilateral secondary osteoarthritis of knee | |
| multiple | M15.3 | Secondary multiple arthritis | |
| shoulder | M19.21 | Secondary osteoarthritis, shoulder | not billable |
| specified site NEC | M19.29 | Secondary osteoarthritis, other specified site | |
| wrist | M19.23 | Secondary osteoarthritis, wrist | not billable |
| hand joint › first carpometacarpal joint | M18.5 | Other unilateral secondary osteoarthritis of first carpometacarpal joint | not billable |
| hip › bilateral | M16.6 | Other bilateral secondary osteoarthritis of hip | |
| knee › bilateral | M17.4 | Other bilateral secondary osteoarthritis of knee | |
| hand joint › first carpometacarpal joint › bilateral | M18.4 | Other bilateral secondary osteoarthritis of first carpometacarpal joints |
Osteoarthritis shoulder
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources