2027 ICD-10-CM Diagnosis Code E63.9Nutritional deficiency, unspecified
ICD-10-CM Codes›E00–E89›E50-E64›E63
- Billable — Valid for Submission
- Not Chronic
E63.9 is a billable ICD-10-CM diagnosis code for nutritional deficiency, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 640 through 641. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nutritional deficiencies.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Acute deficiency state
- Alteration in nutrition
- Alteration in nutrition: less than body requirements
- Angular cheilitis
- Angular cheilitis due to nutritional deficiency
- Below expected nutrient requirement
- Cardiac glycogenosis
- Chronic deficiency state
- Dementia due to nutritional deficiency
- Dietetic gastritis
- Dilated cardiomyopathy due to nutritional deficiency
- Encephalopathy due to nutritional deficiency
- Enteral nutrition infusion finding
- Female athlete triad
- Fetal disorder due to maternal nutritional disorder
- Glaucoma in endocrine, nutritional and metabolic diseases
- Hypermelanosis due to nutritional disorder
- Impaired nutrient utilization
- Inadequate enteral nutrition infusion
- Inadequate food diet
- Inadequate oral intake
- Inadequate parenteral nutrition infusion
- Infiltrative cardiomyopathy
- Intellectual disability due to nutritional deficiency
- Metabolic and nutritional disorders affecting skin
- Myelopathy due to nutritional deficiency
- Neglect of adult
- Neurological disorder due to nutrient deficiency
- Neuropathy due to nutritional deficiency
- Nutrition deficiency due to a particular kind of food
- Nutrition impaired
- Nutrition impaired due to imbalance of nutrients
- Nutrition impaired due to limited access to healthful foods
- Nutritional autonomic neuropathy
- Nutritional deficiency disorder
- Nutritional deficiency in pregnancy
- Nutritional deficiency state
- Nutritional deficiency with AIDS
- Nutritional desexing syndrome
- Nutritional disorder
- Nutritional neglect of adult
- Parenteral nutrition infusion finding
- Radiculopathy due to nutritional deficiency
- RED-S - relative energy deficiency in sport
- Undernourished
- White matter disorder due to nutritional deficiency
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to E63.9: its own notes plus those printed at E63, block E50-E64, and Chapter 4. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name E63.9, its category, or a range that includes it.
Excludes1 2
These codes carry an Excludes1 note naming E63.9: they are not reported together with it, unless the two conditions are unrelated.
Code First 1
These codes say to code first a condition named in the note, and E63.9 is one of the conditions named.
- G63 Polyneuropathy in diseases classified elsewhere
Notes 1
These notes mention E63.9.
- E64 Sequelae of malnutrition and other nutritional deficienciesThis category is to be used to indicate conditions in categories E43, E44, E46, E50-E63 as the cause of sequelae, which are themselves classified elsewhere. The 'sequelae' include conditions specified as such; they also include the late effects of diseases classifiable to the above categories if the disease itself is no longer present names E50-E63, which includes this code
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Arthropathy See Also: Arthritis; M12.9
nutritional deficiency See Also: subcategory M14.8-; E63.9
diet E63.9
nutrition, nutritional See Also: Nutrition deficient; E63.9
Disease, diseased See Also: Syndrome;
nutritional E63.9
Disturbance (s) See Also: Disease;
nutritional E63.9
Nutrition deficient or insufficient See Also: Malnutrition; E63.9
Polyneuritis, polyneuritic See Also: Polyneuropathy;
nutritional E63.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Malnutrition
an imbalanced nutritional status resulting from insufficient intake of nutrients to meet normal physiological requirement.
Patient EducationClinical
Malnutrition
Malnutrition means that your body isn't getting enough calories or the right balance of nutrients to stay healthy. This can happen if you don't get enough protein, carbohydrates, and fats, eat too much unhealthy food, or don't get the vitamins and minerals your body needs.
The full article covers:
- What is malnutrition?
- What are the types of malnutrition?
- What causes malnutrition?
- Who is at risk for developing malnutrition?
- What are the symptoms of malnutrition?
- How is malnutrition diagnosed?
- What are the treatments for malnutrition?
- Can malnutrition be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert E63.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About E63.9Overview
What is the ICD-10 code for nutritional deficiency, unspecified?
The ICD-10-CM code for nutritional deficiency, unspecified is E63.9 (sometimes written as E639). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is E63.9 (Other nutritional deficiencies) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report nutritional deficiency, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does E63.9 group to?
When nutritional deficiency, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 641, 640, with relative weights from 0.7864 to 1.3392 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of E63.9?
Under the General Equivalence Mappings, nutritional deficiency, unspecified converts to ICD-9-CM 269.9 (nutrition deficiency NOS). The mapping is approximate, so confirm the match fits the documentation.
