Is M66.33 a billable code?
No. M66.33 is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
M66.33: Spontaneous rupture of flexor tendons, forearm
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
M66.33 groups related diagnoses under spontaneous rupture of flexor tendons, forearm. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under M66.33
- M66.331Spontaneous rupture of flexor tendons, right forearm
- M66.332Spontaneous rupture of flexor tendons, left forearm
- M66.339Spontaneous rupture of flexor tendons, unspecified forearm
Other codes in M66.3 Spontaneous rupture of flexor tendons
- M66.30Spontaneous rupture of flexor tendons, unspecified site
- M66.31Spontaneous rupture of flexor tendons, shoulderheader
- M66.32Spontaneous rupture of flexor tendons, upper armheader
- M66.34Spontaneous rupture of flexor tendons, handheader
- M66.35Spontaneous rupture of flexor tendons, thighheader
- M66.36Spontaneous rupture of flexor tendons, lower legheader
- M66.37Spontaneous rupture of flexor tendons, ankle and footheader
- M66.38Spontaneous rupture of flexor tendons, other site
- M66.39Spontaneous rupture of flexor tendons, multiple sites
M66.33 questions
What does M66.33 mean?
M66.33 is the ICD-10-CM code for Spontaneous rupture of flexor tendons, forearm. It is in chapter 13, Diseases of the musculoskeletal system and connective tissue (M00-M99).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.