M67.31 – Transient synovitis, shoulder

ICD-10-CM 2027 diagnosis code · Disorders of synovium and tendon

Non-billable header

ICD-10-CM code M67.31

Code: M67.31 (claims format: M6731)
Description: Transient synovitis, shoulder
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: M65-M67 Disorders of synovium and tendon
Parent codes: M67 › M67.3

Billable codes under M67.31

M67.31 is a header code and cannot be used on claims. Choose the most specific code:

M67.311 – Transient synovitis, right shoulderBillable
M67.312 – Transient synovitis, left shoulderBillable
M67.319 – Transient synovitis, unspecified shoulderBillable

Notes inherited from parent codes

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

M67 – Other disorders of synovium and tendon

Excludes1 (not coded here):

palmar fascial fibromatosis [Dupuytren] (M72.0)
tendinitis NOS (M77.9-)
xanthomatosis localized to tendons (E78.2)

M67.3 – Transient synovitis

Applicable to:

Toxic synovitis

Excludes1 (not coded here):

palindromic rheumatism (M12.3-)

Index terms for M67.31

Entries in the ICD-10-CM alphabetic index that lead to this code:

Synovitis, transient, shoulder

Related codes in M67.3

M67.30 – Transient synovitis, unspecified siteBillable
M67.32 – Transient synovitis, elbowHeader
M67.33 – Transient synovitis, wristHeader
M67.34 – Transient synovitis, handHeader
M67.35 – Transient synovitis, hipHeader
M67.36 – Transient synovitis, kneeHeader
M67.37 – Transient synovitis, ankle and footHeader
M67.38 – Transient synovitis, other siteBillable
M67.39 – Transient synovitis, multiple sitesBillable

Frequently asked questions

What is ICD-10 code M67.31?

M67.31 is the ICD-10-CM code for transient synovitis, shoulder, in the block M65-M67 (Disorders of synovium and tendon).

Is M67.31 a billable code?

No. M67.31 is a header code with more specific child codes; report one of the billable codes listed above.

What category does M67.31 belong to?

It belongs to category M67 – Other disorders of synovium and tendon.

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.