E63.9 Nutritional deficiency, unspecified

Billable ICD-10-CM code, FY2026.

Applies from E63 Other nutritional deficiencies

Excludes2 (not included here)

• dehydration (E86.0)
• failure to thrive, adult (R62.7)
• failure to thrive, child (R62.51)
• feeding problems in newborn (P92.-)
• sequelae of malnutrition and other nutritional deficiencies (E64.-)

MS-DRG index

Defines the logic of DRG(s) 640-641 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 269.9 Unspecified nutritional deficiency (approximate)

Code annotations containing back-references to E63.9

Back-references to E63.9

• Type 1 Excludes: E46 Unspecified protein-calorie malnutrition ("nutritional deficiency NOS (E63.9)")

Back-references to E63

• Code First: G63 Polyneuropathy in diseases classified elsewhere ("nutritional deficiency (E40-E64)")
• Type 1 Excludes: Z72.4 Inappropriate diet and eating habits ("malnutrition and other nutritional deficiencies (E40-E64)")

Diagnosis Index entries for E63.9

• Arthropathy › in (due to) › nutritional deficiency
• Cardiomyopathy (familial) (idiopathic) › nutritional
• Cataract (cortical) (immature) (incipient) › in (due to) › nutritional disease
• Deficiency, deficient › diet
• Deficiency, deficient › nutrition, nutritional
• Dietary › inadequacy or deficiency
• Disease, diseased › nutritional
• Disturbance (s) › nutritional
• Gastritis (simple) › due to diet deficiency
• Inadequate, inadequacy › diet (causing nutritional deficiency)
• Insufficiency, insufficient › dietary
• Nutrition deficient or insufficient
• Polyneuritis, polyneuritic › nutritional
• Polyneuropathy (peripheral) › in (due to) › nutritional deficiency NEC
• Polyneuropathy (peripheral) › nutritional NEC

Nearby codes

• E63 Other nutritional deficiencies
• E63.0 Essential fatty acid [EFA] deficiency
• E63.1 Imbalance of constituents of food intake
• E63.8 Other specified nutritional deficiencies
• E63.9 Nutritional deficiency, unspecified (this code)