ICD-10-CM 2027
ICD-10 code for malnutrition screening
Encounter for screening for other suspected endocrine disorder
From the official ICD-10-CM alphabetic index entry “Screening (for) › malnutrition”. Page updated September 29, 2026.
About coding malnutrition screening
The ICD-10-CM code for malnutrition screening is Z13.29 (Encounter for screening for other suspected endocrine disorder). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z13.29.
Within Z13.2, choose Z13.29 (other suspected endocrine disorder) only when documentation doesn't support a more specific option: nutritional disorder (Z13.21) and metabolic disorder (Z13.22).
The conditions in its Excludes2 note aren't part of Z13.29, but may be coded alongside it if the patient has both: encounter for screening for diabetes mellitus (Z13.1).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific malnutrition screening codes (official index)
Common questions about malnutrition screening ICD-10 codes
What is the ICD-10 code for malnutrition screening?
- Z13.29 — Encounter for screening for other suspected endocrine disorder. More specific codes apply when the documentation supports them: Z13.228, Z13.21.
What is the ICD-10 code for metabolic malnutrition screening?
- Z13.228 — Encounter for screening for other metabolic disorders.
What is the ICD-10 code for nutritional malnutrition screening?
- Z13.21 — Encounter for screening for nutritional disorder.
Is Z13.29 billable?
- Yes. Z13.29 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z13.29 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z13.29 a CC or MCC?
- No. Z13.29 is neither a CC nor an MCC under MS-DRG v44.0.