E64.0
Sequelae of protein-calorie malnutrition
E64.0 (also written E640) is a billable ICD-10-CM diagnosis code for sequelae of protein-calorie malnutrition. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 6 codes in category E64 (Sequelae of malnutrition and other nutritional deficiencies). The Alphabetic Index lists it under 1 entry. Its coding notes include a Code first instruction, 1 Excludes1 entry and 2 Excludes2 entries.
Code first
If the underlying condition listed here is present and known, sequence it first.
- condition resulting from (sequela) of malnutrition and other nutritional deficiencies
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- retarded development following protein-calorie malnutrition (E45)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Hospital CC
Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 9 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.
Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix CNotes
- This 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
Also from chapter/block level (1 note)
- 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.
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry