Alphabetic Index FY2027

M05.0

Felty's syndrome

FY2027Chapter 13: Diseases of the musculoskeletal system and connective tissue/M05–M14 Inflammatory polyarthropathies

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

M05.0 is a non-billable ICD-10-CM code header for felty's syndrome. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are M05.00 Felty's syndrome, unspecified site; M05.01 Felty's syndrome, shoulder; M05.02 Felty's syndrome, elbow; M05.03 Felty's syndrome, wrist and 5 more. Its coding notes include 3 Excludes1 entries and 10 Excludes2 entries.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Inherited from M05 Rheumatoid arthritis with rheumatoid factor
  • rheumatic fever (I00)
  • juvenile rheumatoid arthritis (M08.-)
  • rheumatoid arthritis of spine (M45.-)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (10 notes)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Inclusion terms

Conditions classified to this code.

This code
  • Rheumatoid arthritis with splenoadenomegaly and leukopenia

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 13 Diseases of the musculoskeletal system and connective tissue
  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

More specific codes under M05.0 9