M08.46
Pauciarticular juvenile rheumatoid arthritis, knee
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 14 never code together
M08code
M00-M99chapter
Excludes2
- arthropathic psoriasis (L40.5-)L40.5-
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- compartment syndrome (traumatic) (T79.A-)T79.A-
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes 5
Index entries leading here 1
Alongside this code 9 same parent — M08.4
M08.40 Pauciarticular juvenile rheumatoid arthritis, unsp site M08.41 Pauciarticular juvenile rheumatoid arthritis, shoulder category M08.42 Pauciarticular juvenile rheumatoid arthritis, elbow category M08.43 Pauciarticular juvenile rheumatoid arthritis, wrist category M08.44 Pauciarticular juvenile rheumatoid arthritis, hand category M08.45 Pauciarticular juvenile rheumatoid arthritis, hip category M08.47 Pauciarticular juvenile rheumatoid arthritis, ankle and foot category M08.48 Pauciarticular juvenile rheumatoid arthritis, vertebrae M08.4A Pauciarticular juvenile rheumatoid arthritis, oth site
Subordinate codes 3
Medications 2
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.