M08.8 – Other juvenile arthritis

ICD-10-CM 2027 diagnosis code · Inflammatory polyarthropathies

Non-billable header

ICD-10-CM code M08.8

Code: M08.8 (claims format: M088)
Description: Other juvenile arthritis
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block: M05-M14 Inflammatory polyarthropathies
Parent codes: M08

Billable codes under M08.8

M08.8 is a header code and cannot be used on claims. Choose the most specific code:

M08.80 – Other juvenile arthritis, unspecified siteBillable
M08.81 – Other juvenile arthritis, shoulderHeader (more codes below)
M08.82 – Other juvenile arthritis, elbowHeader (more codes below)
M08.83 – Other juvenile arthritis, wristHeader (more codes below)
M08.84 – Other juvenile arthritis, handHeader (more codes below)
M08.85 – Other juvenile arthritis, hipHeader (more codes below)
M08.86 – Other juvenile arthritis, kneeHeader (more codes below)
M08.87 – Other juvenile arthritis, ankle and footHeader (more codes below)
M08.88 – Other juvenile arthritis, other specified siteBillable
M08.89 – Other juvenile arthritis, multiple sitesBillable

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

M08 – Juvenile arthritis

Excludes1 (not coded here):

arthropathy in Whipple's disease (M14.8)
Felty's syndrome (M05.0)
juvenile dermatomyositis (M33.0-)
psoriatic juvenile arthropathy (L40.54)

Code also:

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

Related codes in M08

Frequently asked questions

What is ICD-10 code M08.8?

M08.8 is the ICD-10-CM code for other juvenile arthritis, in the block M05-M14 (Inflammatory polyarthropathies).

Is M08.8 a billable code?

No. M08.8 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M08.8 belong to?

It belongs to category M08 – Juvenile arthritis.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.