Excludes1 pair
M08- vs M14.8-
M08 and M14.8 are not coded together. ICD-10-CM declares them mutually exclusive with an Excludes1 note — the two conditions are not expected to occur together, so exactly one of them is normally correct for a given encounter. The Official Guidelines carve out one exception: if the two conditions are clearly unrelated to each other, both may be reported.
The official note, declared on M08
arthropathy in Whipple's disease (M14.8)
M08
Juvenile arthritis
Not billable
- Chapter 13
- Diseases of the musculoskeletal system and connective tissue
- Section
- M05-M14
M14.8
Arthropathies in other specified diseases classified elsewhere
Not billable
- Chapter 13
- Diseases of the musculoskeletal system and connective tissue
- Section
- M05-M14
Indexed under
- Arthropathy › in › acromegaly
- Arthropathy › in › amyloidosis
- Arthropathy › in › endocrine disease NOS
- Arthropathy › in › hemochromatosis
- Arthropathy › in › hyperthyroidism
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027