ICD-9-CM diagnosis code (retired)
277.85 — Disorders of fatty acid oxidation
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 277.85
277.85 is an ICD-9-CM diagnosis code for disorders of fatty acid oxidation. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to 6 ICD-10-CM codes, such as E71.310 (Long chain/very long chain acyl CoA dehydrogenase deficiency), E71.311 (Medium chain acyl CoA dehydrogenase deficiency) and E71.312 (Short chain acyl CoA dehydrogenase deficiency). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- E71.310Long chain/very long chain acyl CoA dehydrogenase deficiencyapproximate
- E71.311Medium chain acyl CoA dehydrogenase deficiencyapproximate
- E71.312Short chain acyl CoA dehydrogenase deficiencyapproximate
- E71.313Glutaric aciduria type IIapproximate
- E71.314Muscle carnitine palmitoyltransferase deficiencyapproximate
- E71.318Other disorders of fatty-acid oxidationapproximate
Common questions about 277.85
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.