ICD-10-CM › M00-M99 › M05-M14 › M05.86 Other rheumatoid arthritis with... › M05.869
Other rheumatoid arthritis with rheumatoid factor of unspecified knee
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.
- FY2007 Added to the draft code set draft Other rheumatoid arthritis with rheumatoid factor of unspecified knee
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from M05 Rheumatoid arthritis with rheumatoid factor
Excludes1 - never coded here
- rheumatic fever (I00)
- juvenile rheumatoid arthritis (M08.-)
- rheumatoid arthritis of spine (M45.-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Arthropyosis
- Pyoarthrosis
- Septic > joint
- Abscess > joint
- Rheumatism > gout
- Pyemia, pyemic > joint
- Rheumatoid > arthritis
- Pyarthritis, pyarthrosis
- Rheumatoid > polyarthritis
- Arthritis, arthritic > septic
- Disease, diseased > rheumatoid
- Arthritis, arthritic > purulent
- Arthritis, arthritic > rheumatic
- Suppuration, suppurative > joint
- Arthritis, arthritic > suppurative
- Arthritis, arthritic > in > infection
- Rheumatoid > arthritis > seropositive
- Disease, diseased > joint > suppurative
- Polyarthritis, polyarthropathy > infective
- Arthritis, arthritic > in > coliform bacilli
- Arthritis, arthritic > infectious or infective
- Arthritis, arthritic > rheumatoid > with > rheumatoid factor
- Arthritis, arthritic > rheumatoid > seropositive > specified NEC > knee
Codes in the same group
| Code | Description | Status |
|---|---|---|
| M05.861 | Other rheumatoid arthritis with rheumatoid factor of right knee | Valid |
| M05.862 | Other rheumatoid arthritis with rheumatoid factor of left knee | Valid |