G71.3
Billable codeMitochondrial myopathy, not elsewhere classified
The ICD-10 code for mitochondrial myopathy, not elsewhere classified is G71.3.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Related codes in this category
- G71.0Muscular dystrophynon-billable header
- G71.1Myotonic disordersnon-billable header
- G71.2Congenital myopathiesnon-billable header
- G71.8Other primary disorders of muscles
- G71.9Primary disorder of muscle, unspecified
- G71.3Mitochondrial myopathy, not elsewhere classified
ICD-9-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.
- 35989Approximate match
Associated MS-DRGs
G71.3 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.
Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.