E51.8 — Other manifestations of thiamine deficiency
E51.8 is a billable, specific ICD-10-CM code for other manifestations of thiamine deficiency. It is valid for submission on a claim.
Risk adjustment
E51.8 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.
Medicare coverage
E51.8 is named in 6 Medicare coverage policies — 6 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A54969Billing and Coding: Nerve Conduction Studies and Electromyography
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
- A57307Billing and Coding: Nerve Conduction Studies and Electromyography
- A57326Billing and Coding: Electrocardiograms
How E51.8 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 E51.8.
- Thiamin deficiency›specified NEC
Related codes at this level
Codes that share E51. If E51.8 is not quite right, the correct code is usually one of these.
Questions about E51.8
- Is E51.8 a billable ICD-10-CM code?
- Yes. E51.8 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does E51.8 sit in the tabular list?
- Endocrine, nutritional and metabolic diseases (E00-E89), in the block Other nutritional deficiencies (E50-E64).