E63.9 — Nutritional deficiency, unspecified
Is E63.9 billable?
Yes, but E63.9 is an unspecified code. E63.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, E63.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting E63.9 — the more specific alternatives are listed below.
More specific alternatives
E63.9 at a glance
| Code | E63.9 |
|---|---|
| Description | Nutritional deficiency, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does E63.9 group to?
E63.9 sits in MDC 10 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 640Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCCmedical
- 641Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCCmedical
How is E63.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to E63.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Nutrition deficient or insufficient
- Cardiomyopathy › nutritional (familial) (idiopathic)
- Deficiency, deficient › diet
- Deficiency, deficient › nutrition, nutritional
- Dietary › inadequacy or deficiency
- Disease, diseased › nutritional
- Disturbance › nutritional (s)
- Gastritis › due to diet deficiency (simple)
- Inadequate, inadequacy › diet
- Insufficiency, insufficient › dietary
- Polyneuritis, polyneuritic › nutritional
- Polyneuropathy › nutritional NEC (peripheral)
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E63.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- transitory endocrine and metabolic disorders specific to newborn (P70-P74)
Excludes2 — not included here — inherited from E50-E64
The conditions below are not part of E63.9, but a patient may have both at the same time. When documentation supports it, E63.9 and the excluded code may both be reported.
- nutritional anemias (D50-D53)
Excludes2 — not included here — inherited from E63
The conditions below are not part of E63.9, but a patient may have both at the same time. When documentation supports it, E63.9 and the excluded code may both be reported.
How long has E63.9 existed?
E63.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with E63.9?
ICD-10-CM declares these codes mutually exclusive with E63.9 — exactly one of each pair can be correct for a given encounter.