2027 ICD-10-CM Diagnosis Code E63.0Essential fatty acid [EFA] deficiency
ICD-10-CM Codes›E00–E89›E50-E64›E63
- Billable — Valid for Submission
- Not Chronic
E63.0 is a billable ICD-10-CM diagnosis code for essential fatty acid [EFA] deficiency. 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. Coders also document this condition as essential fatty acid deficiency. 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.
- Essential fatty acid deficiency
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to E63.0: 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 E63.0, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming E63.0: they are not reported together with it, unless the two conditions are unrelated.
- Z72.4 Inappropriate diet and eating habits
Code First 1
These codes say to code first a condition named in the note, and E63.0 is one of the conditions named.
- G63 Polyneuropathy in diseases classified elsewhere
Notes 1
These notes mention E63.0.
- 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.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Dietary Fats
Fat is a type of nutrient. You need some fat in your diet but not too much. Fats give you energy and help your body absorb vitamins. Dietary fat also plays a major role in your cholesterol levels.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert E63.0 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About E63.0Overview
What is the ICD-10 code for essential fatty acid [EFA] deficiency?
The ICD-10-CM code for essential fatty acid [EFA] deficiency is E63.0 (sometimes written as E630). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is E63.0 (Other nutritional deficiencies) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report essential fatty acid [EFA] deficiency on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does E63.0 group to?
When essential fatty acid [EFA] deficiency 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 E63.0?
Under the General Equivalence Mappings, essential fatty acid [EFA] deficiency converts to ICD-9-CM 269.8 (nutrition deficiency NEC). The mapping is approximate, so confirm the match fits the documentation.
