ICD-10-CM 2027
ICD-10 code for disease or disorder screening
From the official ICD-10-CM alphabetic index entry “Screening (for) › disease or disorder”. Page updated September 29, 2026.
About coding disease or disorder screening
The ICD-10-CM code for disease or disorder screening is Z13.9 (Encounter for screening, unspecified). The official index lists 55 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on Z13.9.
Within Z13, choose Z13.9 (screening, unspecified) only when documentation doesn't support a more specific option: screening for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (Z13.0), screening for diabetes mellitus (Z13.1), screening for nutritional, metabolic and other endocrine disorders (Z13.2), screening examination for mental health and behavioral disorders (Z13.3), screening for certain developmental disorders in childhood (Z13.4), screening for eye and ear disorders (Z13.5), screening for cardiovascular disorders (Z13.6), screening for genetic and chromosomal anomalies (Z13.7) and 1 more.
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.
More specific disease or disorder screening codes (official index)
- bacterial NEC Z11.2 — Encounter for screening for other bacterial diseases
- intestinal infectious Z11.0 — Encounter for screening for intestinal infectious diseases
- respiratory tuberculosis Z11.1 — Encounter for screening for respiratory tuberculosis
- behavioral Z13.30 — Encounter for screening examination for mental health and behavioral disorders, unspecified
- specified NEC Z13.39 — Encounter for screening examination for other mental health and behavioral disorders
- blood or blood-forming organ Z13.0 — Encounter for screening for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- cardiovascular Z13.6 — Encounter for screening for cardiovascular disorders
- Chagas' Z11.6 — Encounter for screening for other protozoal diseases and helminthiases
- chlamydial Z11.8 — Encounter for screening for other infectious and parasitic diseases
- coronavirus (novel) 2019 Z11.52 — Encounter for screening for COVID-19
- COVID-19 Z11.52 — Encounter for screening for COVID-19
- dental Z13.89 — Encounter for screening for other disorder
- developmental delays Z13.40 — Encounter for screening for unspecified developmental delays
- global (milestones) Z13.42 — Encounter for screening for global developmental delays (milestones)
- specified NEC Z13.49 — Encounter for screening for other developmental delays
- digestive tract NEC Z13.818 — Encounter for screening for other digestive system disorders
- lower GI Z13.811 — Encounter for screening for lower gastrointestinal disorder
- upper GI Z13.810 — Encounter for screening for upper gastrointestinal disorder
- ear Z13.5 — Encounter for screening for eye and ear disorders
- endocrine Z13.29 — Encounter for screening for other suspected endocrine disorder
- eye Z13.5 — Encounter for screening for eye and ear disorders
- genitourinary Z13.89 — Encounter for screening for other disorder
- heart Z13.6 — Encounter for screening for cardiovascular disorders
- human immunodeficiency virus (HIV) infection Z11.4 — Encounter for screening for human immunodeficiency virus [HIV]
- immunity Z13.0 — Encounter for screening for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- infection
- intestinal Z11.0 — Encounter for screening for intestinal infectious diseases
- specified NEC Z11.6 — Encounter for screening for other protozoal diseases and helminthiases
- infectious Z11.9 — Encounter for screening for infectious and parasitic diseases, unspecified
- mental health and behavioral Z13.30 — Encounter for screening examination for mental health and behavioral disorders, unspecified
- specified NEC Z13.39 — Encounter for screening examination for other mental health and behavioral disorders
- metabolic Z13.228 — Encounter for screening for other metabolic disorders
- neurological Z13.89 — Encounter for screening for other disorder
- nutritional Z13.21 — Encounter for screening for nutritional disorder
- metabolic Z13.228 — Encounter for screening for other metabolic disorders
- lipoid disorders Z13.220 — Encounter for screening for lipoid disorders
- protozoal Z11.6 — Encounter for screening for other protozoal diseases and helminthiases
- intestinal Z11.0 — Encounter for screening for intestinal infectious diseases
- respiratory Z13.83 — Encounter for screening for respiratory disorder NEC
- rheumatic Z13.828 — Encounter for screening for other musculoskeletal disorder
- rickettsial Z11.8 — Encounter for screening for other infectious and parasitic diseases
- sexually-transmitted NEC Z11.3 — Encounter for screening for infections with a predominantly sexual mode of transmission
- human immunodeficiency virus (HIV) Z11.4 — Encounter for screening for human immunodeficiency virus [HIV]
- sickle-cell (trait) Z13.0 — Encounter for screening for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
- skin Z13.89 — Encounter for screening for other disorder
- specified NEC Z13.89 — Encounter for screening for other disorder
- spirochetal Z11.8 — Encounter for screening for other infectious and parasitic diseases
- thyroid Z13.29 — Encounter for screening for other suspected endocrine disorder
- vascular Z13.6 — Encounter for screening for cardiovascular disorders
- venereal Z11.3 — Encounter for screening for infections with a predominantly sexual mode of transmission
- viral NEC Z11.59 — Encounter for screening for other viral diseases
- coronavirus (novel) 2019 Z11.52 — Encounter for screening for COVID-19
- COVID-19 Z11.52 — Encounter for screening for COVID-19
- human immunodeficiency virus (HIV) Z11.4 — Encounter for screening for human immunodeficiency virus [HIV]
- intestinal Z11.0 — Encounter for screening for intestinal infectious diseases
- SARS-CoV-2 Z11.52 — Encounter for screening for COVID-19
Common questions about disease or disorder screening ICD-10 codes
What is the ICD-10 code for disease or disorder screening?
- Z13.9 — Encounter for screening, unspecified. More specific codes apply when the documentation supports them: Z11.2, Z11.0, Z11.1, Z13.30 and others below.
What is the ICD-10 code for bacterial nec disease or disorder screening?
- Z11.2 — Encounter for screening for other bacterial diseases.
What is the ICD-10 code for behavioral disease or disorder screening?
- Z13.30 — Encounter for screening examination for mental health and behavioral disorders, unspecified.
What is the ICD-10 code for blood or blood-forming organ disease or disorder screening?
- Z13.0 — Encounter for screening for diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
What is the ICD-10 code for cardiovascular disease or disorder screening?
- Z13.6 — Encounter for screening for cardiovascular disorders.
What is the ICD-10 code for chagas' disease or disorder screening?
- Z11.6 — Encounter for screening for other protozoal diseases and helminthiases.
What is the ICD-10 code for chlamydial disease or disorder screening?
- Z11.8 — Encounter for screening for other infectious and parasitic diseases.
Is Z13.9 billable?
- Yes. Z13.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z13.9 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 Z13.9 a CC or MCC?
- No. Z13.9 is neither a CC nor an MCC under MS-DRG v44.0.