2026 ICD-10-CM Diagnosis Code Z83.1Family history of other infectious and parasitic diseases

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z83

ICD-10-CM Z83.1
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z83.1 is a billable ICD-10-CM diagnosis code for family history of other infectious and parasitic diseases. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Family history of disease.

Code Identity

ICD-10-CM Code
Z83.1
Billable Status
Yes — Valid for Submission
Code Describes
Family history of other infectious and parasitic diseases
Short Description
Family history of other infectious and parasitic diseases
Same as the full description in the CMS dataset.
Parent Code
Z83
Family history of other specific disorders

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status
CategoryZ83Family history of other specific disorders
This CodeZ83.1Family history of other infectious and parasitic diseases

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z83.1.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Present on Admission (POA)Billing

Z83.1 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Family history of helminth infection
  • Family history of infectious disease
  • Family history of viral hepatitis type C
  • FH: Breast disease
  • FH: Gonorrhea
  • FH: Hepatitis
  • FH: Liver disease
  • FH: Syphilis
  • FH: Tuberculosis
  • Maternal active tuberculosis
  • Maternal active tuberculosis - untreated
  • Maternal herpes simplex infection of skin of breast
  • Maternal history of viral hepatitis B
  • Maternal human T-lymphotrophic virus type I infection
  • Maternal human T-lymphotrophic virus type II infection
  • Maternal infection
  • Maternal varicella infection
  • Maternal varicella infection - untreated

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • History
      • family (of)
        • disease or disorder (of)
          • infectious NEC
    • History
      • family (of)
        • disease or disorder (of)
          • parasitic NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC028
Family history of disease
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Family History

Your family history includes health information about you and your close relatives. Families have many factors in common, including their genes, environment, and lifestyle. Looking at these factors can help you figure out whether you have a higher risk for certain health problems, such as heart disease, stroke, and cancer.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z83.1 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V18.8 Fm hx-infect/parasit dis
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z83.1Overview

Is Z83.1 (Family history of other specific disorders) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report family history of other infectious and parasitic diseases on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z83.1 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because family history of other infectious and parasitic diseases describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z83.1 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for family history of other infectious and parasitic diseases on inpatient claims.

What is the ICD-9 equivalent of Z83.1?

Under the General Equivalence Mappings, family history of other infectious and parasitic diseases converts to ICD-9-CM V18.8 (fm hx-infect/parasit dis). The mapping is a direct match.