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ICD-10-CM Code E46
Unspecified protein-calorie malnutrition

Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

E46 is a billable ICD code used to specify a diagnosis of unspecified protein-calorie malnutrition. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

The ICD code E46 is used to code Malnutrition

Malnutrition or malnourishment is a condition that results from eating a diet in which nutrients are either not enough or are too much such that the diet causes health problems. It may involve calories, protein, carbohydrates, vitamins or minerals. Not enough nutrients is called undernutrition or undernourishment while too much is called overnutrition. Malnutrition is often used specifically to refer to undernutrition where there is not enough calories, protein, or micronutrients. If undernutrition occurs during pregnancy, or before two years of age, it may result in permanent problems with physical and mental development. Extreme undernourishment, known as starvation, may have symptoms that include: a short height, thin body, very poor energy levels, and swollen legs and abdomen. People also often get infections and are frequently cold. The symptoms of micronutrient deficiencies depend on the micronutrient that is lacking.

Specialty: Critical Care Medicine
MeSH Code: D044342
ICD 9 Code: 263.9

An orange ribbon—the awareness ribbon for malnutrition.

Source: Wikipedia

Coding Notes for E46 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Malnutrition NOS
Protein-calorie imbalance NOS
Code Type-1 Excludes:
Type-1 Excludes
Type-1 Excludes mean the conditions excluded are mutually exclusive and should never be coded together. Excludes 1 means "do not code here."
Nutritional deficiency NOS - instead, use code E63.9

MS-DRG Mapping

  • DRG Group #640-641 - Misc disorders of nutrition, metabolism, fluids or electrolytes with MCC.
  • DRG Group #640-641 - Misc disorders of nutrition, metabolism, fluids or electrolytes without MCC.
  • DRG Group #793 - Full term neonate with major problems.

Related Concepts SNOMET-CT

  • Malnutrition-dehydration cataract (disorder)
  • Nutritional maltreatment of child (event)

ICD-10-CM Alphabetical Index References for 'E46 - Unspecified protein-calorie malnutrition'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code E46. Click on any term below to browse the alphabetical index.

Nutrition deficient or insufficient (E46) (see: Malnutrition)
Malnutrition (E46)
Calorie deficiency or malnutrition (E46) (see: Malnutrition)


Other protein-calorie malnutrition (approximate match)
Unspecified protein-calorie malnutrition (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code E46 and a single ICD9 code, 263.9 is an approximate match for comparison and conversion purposes.

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/E46