ICD-10-CM diagnosis code
M11.172 Familial chondrocalcinosis, left ankle and foot
- Billable
- Yes, a complete code (FY2026)
- Category
- M11 Other crystal arthropathies
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Other codes in M11
97 complete codes in this category.
- M11.152Familial chondrocalcinosis, left hip
- M11.159Familial chondrocalcinosis, unspecified hip
- M11.161Familial chondrocalcinosis, right knee
- M11.162Familial chondrocalcinosis, left knee
- M11.169Familial chondrocalcinosis, unspecified knee
- M11.171Familial chondrocalcinosis, right ankle and foot
- M11.172Familial chondrocalcinosis, left ankle and foot
- M11.179Familial chondrocalcinosis, unspecified ankle and foot
- M11.18Familial chondrocalcinosis, vertebrae
- M11.19Familial chondrocalcinosis, multiple sites
- M11.20Other chondrocalcinosis, unspecified site
- M11.211Other chondrocalcinosis, right shoulder
Documentation tips
- Make sure the note supports every element of the title, “Familial chondrocalcinosis, left ankle and foot”: 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 M11.
The international WHO ICD-10 also has M11, 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.
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