---
title: "ICD-10-CM E55.9: Vitamin D deficiency, unspecified | BillingBrief"
description: "ICD-10-CM code E55.9: Vitamin D deficiency, unspecified. Category, related codes, and the official source, in plain English."
canonical: "https://billingbrief.com/icd10/e55.9/"
language: "en"
---

# E55.9 Vitamin D deficiency, unspecified

ICD-10-CM · [CMS code reference](#source)

**Official ICD-10-CM description:** Vitamin D deficiency, unspecified

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Also covers

-   Avitaminosis D

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   adult osteomalacia (M83.-)
-   osteoporosis (M80.-)
-   sequelae of rickets (E64.3)

### Excludes2

Not part of this code, but both can be coded when both are documented.

-   nutritional anemias (D50-D53)

## Related codes

-   [`E55.0` Rickets, active ICD-10-CM](https://billingbrief.com/icd10/e55.0/)

## Common questions

### Is E55.9 a billable code?

Yes. E55.9 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

E55 Vitamin D deficiency

Chapter

Endocrine, nutritional and metabolic diseases

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).