M05.56
Rheumatoid polyneuropathy with rheumatoid arthritis of knee
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 13 never code together
M05code
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 2
Alongside this code 8 same parent — M05.5
M05.50 Rheumatoid polyneurop w rheumatoid arthritis of unsp site M05.51 Rheumatoid polyneuropathy w rheumatoid arthritis of shoulder category M05.52 Rheumatoid polyneuropathy with rheumatoid arthritis of elbow category M05.53 Rheumatoid polyneuropathy with rheumatoid arthritis of wrist category M05.54 Rheumatoid polyneuropathy with rheumatoid arthritis of hand category M05.55 Rheumatoid polyneuropathy with rheumatoid arthritis of hip category M05.57 Rheumatoid polyneuropathy w rheumatoid arthritis of ank/ft category M05.59 Rheumatoid polyneuropathy w rheumatoid arthritis mult site
Subordinate codes 3
Medications 1
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.