E45 — Retarded development following protein-calorie malnutrition
Is E45 billable?
Yes — E45 is billable for FY2027. E45 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. E45 may be submitted for encounters from October 1, 2026 through September 30, 2027.
E45 at a glance
| Code | E45 |
|---|---|
| Description | Retarded development following protein-calorie malnutrition |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does E45 group to?
E45 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
As a secondary diagnosis, E45 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is E45 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to E45. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Nutritional stunting
- Stunting, nutritional
- Dwarfism › nutritional
- Dystrophy, dystrophia › due to malnutrition
- Dystrophy, dystrophia › nutritional
- Development › arrested › due to malnutrition
- Retardation › growth › due to malnutrition
- Retardation › physical › due to malnutrition
Inclusion terms
Alternative wording in documentation that is classified to E45.
- Nutritional short stature
- Nutritional stunting
- Physical retardation due to malnutrition
Excludes1 — never code together — inherited from Chapter 4
The conditions below can never be reported together with E45 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)
Excludes1 — never code together — inherited from E40-E46
The conditions below can never be reported together with E45 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes2 — not included here — inherited from E40-E46
The conditions below are not part of E45, but a patient may have both at the same time. When documentation supports it, E45 and the excluded code may both be reported.
How long has E45 existed?
E45 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 E45?
ICD-10-CM declares these codes mutually exclusive with E45 — exactly one of each pair can be correct for a given encounter.