Is E56.9 a billable ICD-10-CM code?

Yes. E56.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does E56.9 sit in the tabular list?

Endocrine, nutritional and metabolic diseases (E00-E89), in the block Other nutritional deficiencies (E50-E64).

What cannot be coded together with E56.9?

E56.9 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E56.9 (E56) and apply to it just the same.

E56.9

E56.9 — Vitamin deficiency, unspecified

Billable / specific codeICD-10-CM

E56.9 is a billable, specific ICD-10-CM code for vitamin deficiency, unspecified. It is valid for submission on a claim.

Excludes1 inherited from the categories above E56.9

These are not written on E56.9, but they bind it: a note on a category applies to every code beneath it. Billing E56.9 with anything listed here is a denial.

Written on E56 — Other vitamin deficiencies

sequelae of other vitamin deficiencies (E64.8)

Risk adjustment

E56.9 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

E56.9 is named in 2 Medicare coverage policies — 2 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56232Billing and Coding: Foot Care
A56680Billing and Coding: Routine Foot Care

How E56.9 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 E56.9.

Avitaminosis(multiple)
Neuroavitaminosis
Deficiency, deficient›vitamin NOS(multiple)
Polyneuritis, polyneuritic›due to lack of vitamin NEC
Encephalopathy›in›lack of vitamin
Polyneuropathy›in›avitaminosis NEC
Polyneuropathy›in›lack of vitamin NEC

Code history

E56.9 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share E56. If E56.9 is not quite right, the correct code is usually one of these.

Questions about E56.9

Is E56.9 a billable ICD-10-CM code?: Yes. E56.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does E56.9 sit in the tabular list?: Endocrine, nutritional and metabolic diseases (E00-E89), in the block Other nutritional deficiencies (E50-E64).
What cannot be coded together with E56.9?: E56.9 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above E56.9 (E56) and apply to it just the same.