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E71.121

E71.121Propionic acidemia

Billable / specific codeICD-10-CM

E71.121 is a billable, specific ICD-10-CM code for propionic acidemia. It is valid for submission on a claim.

Risk adjustment

E71.121 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

How E71.121 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to E71.121.

  • Propionic acidemia
  • Acidemiapropionic
  • Disorderpropionic acidemia
  • Disordermetabolism NOSamino-acidbranched chainpropionic acidemia

Related codes at this level

Codes that share E71.12. If E71.121 is not quite right, the correct code is usually one of these.

Questions about E71.121

Is E71.121 a billable ICD-10-CM code?
Yes. E71.121 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E71.121 sit in the tabular list?
Endocrine, nutritional and metabolic diseases (E00-E89), in the block Metabolic disorders (E70-E88).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.