Is ICD-10-CM code E45 billable?

Yes, E45 (Retarded development following protein-calorie malnutrition) is a billable ICD-10-CM diagnosis code, valid for reimbursement on HIPAA-covered transactions for FY2026.

What chapter does ICD-10-CM code E45 belong to?

E45 belongs to Chapter 4 of the ICD-10-CM tabular list: E00–E89 (Endocrine, Nutritional and Metabolic Diseases).

E45Billable

Retarded development following protein-calorie malnutrition

Endocrine, Nutritional and Metabolic Diseases·Malnutrition (E40-E46)·category·FY 2026

CH4 Parent Instructions

Excludes1(Not coded here. Use a different code.)

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

E40-E46 Parent Instructions

Excludes1(Not coded here. Use a different code.)

intestinal malabsorption (K90.-)
sequelae of protein-calorie malnutrition (E64.0)

Excludes2(Not included here. Code separately if applicable.)

nutritional anemias (D50-D53)
starvation (T73.0)

Instructional Notes

Includes

Nutritional short stature
Nutritional stunting
Physical retardation due to malnutrition

Clinical Hierarchy

BillableHas subcodes

CH4Endocrine, nutritional and metabolic diseases (E00-E89)

E40-E46Malnutrition (E40-E46)

E45Retarded development following protein-calorie malnutritionBillable

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 640

Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC

DRG 641

Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC