ICD-10-CM 2027
ICD-10 code for intellectual disability screening
Encounter for screening examination for other mental health and behavioral disorders
From the official ICD-10-CM alphabetic index entry “Screening (for) › intellectual disability”. Page updated September 29, 2026.
About coding intellectual disability screening
The ICD-10-CM code for intellectual disability screening is Z13.39 (Encounter for screening examination for other mental health and behavioral disorders).
Within Z13.3, choose Z13.39 (examination for other mental health and behavioral disorders) only when documentation doesn't support a more specific option: unspecified (Z13.30), for depression (Z13.31) and for maternal depression (Z13.32).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about intellectual disability screening ICD-10 codes
What is the ICD-10 code for intellectual disability screening?
- Z13.39 — Encounter for screening examination for other mental health and behavioral disorders.
Is Z13.39 billable?
- Yes. Z13.39 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z13.39 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 Z13.39 a CC or MCC?
- No. Z13.39 is neither a CC nor an MCC under MS-DRG v44.0.