ICD-10-CM diagnosis code
M66.351 Spontaneous rupture of flexor tendons, right thigh
- Billable
- Yes, a complete code (FY2026)
Documenting M66.351? Write the note in seconds
Paste your rough notes and get a structured SOAP note. Free, no account needed.
Other codes in M66
103 complete codes in this category.
- M66.331Spontaneous rupture of flexor tendons, right forearm
- M66.332Spontaneous rupture of flexor tendons, left forearm
- M66.339Spontaneous rupture of flexor tendons, unspecified forearm
- M66.341Spontaneous rupture of flexor tendons, right hand
- M66.342Spontaneous rupture of flexor tendons, left hand
- M66.349Spontaneous rupture of flexor tendons, unspecified hand
- M66.351Spontaneous rupture of flexor tendons, right thigh
- M66.352Spontaneous rupture of flexor tendons, left thigh
- M66.359Spontaneous rupture of flexor tendons, unspecified thigh
- M66.361Spontaneous rupture of flexor tendons, right lower leg
- M66.362Spontaneous rupture of flexor tendons, left lower leg
- M66.369Spontaneous rupture of flexor tendons, unspecified lower leg
Documentation tips
- Make sure the note supports every element of the title, “Spontaneous rupture of flexor tendons, right thigh”: each detail in it should be traceable to the history, examination or assessment.
- Code to the highest specificity the documentation supports. If a detail is missing from the note, add it to the note rather than choosing a less specific code by default.
- Check the Tabular List and official guidelines for instructional notes (“code first”, “use additional code”, Excludes1/Excludes2) that apply to M66.
The international WHO ICD-10 also has M66, with its inclusion and exclusion notes; titles and detail can differ from ICD-10-CM.
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
Look up another code
Stop looking codes up by hand
Docdemic listens to the consultation, writes the note and suggests the diagnosis and procedure codes that fit it, each one checked against your country’s official code list.
Try Docdemic free