Alphabetic Index FY2027

M08.9

Juvenile arthritis, unspecified

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.

M08.9 is a non-billable ICD-10-CM code header for juvenile arthritis, unspecified. 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 M08.90 Juvenile arthritis, unspecified, unspecified site; M08.91 Juvenile arthritis, unspecified, shoulder; M08.92 Juvenile arthritis, unspecified, elbow; M08.93 Juvenile arthritis, unspecified, wrist and 7 more. Its coding notes include a Code also instruction, 5 Excludes1 entries and 10 Excludes2 entries.

Code also

Two codes may be needed to describe the condition. This note gives no sequencing order.

Inherited from M08 Juvenile arthritis
  • any associated underlying condition, such as:
    • regional enteritis [Crohn's disease] (K50.-)
    • ulcerative colitis (K51.-)

Excludes1

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

This code
  • juvenile rheumatoid arthritis, unspecified (M08.0-)
Inherited from M08 Juvenile arthritis
  • arthropathy in Whipple's disease (M14.8)
  • Felty's syndrome (M05.0)
  • juvenile dermatomyositis (M33.0-)
  • psoriatic juvenile arthropathy (L40.54)

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)

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 M08.9 11