2026 ICD-10-CM Diagnosis Code Z83.438Family history of other disorder of lipoprotein metabolism and other lipidemia

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z83

ICD-10-CM Z83.438
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z83.438 is a billable ICD-10-CM diagnosis code for family history of other disorder of lipoprotein metabolism and other lipidemia. 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
Z83.438
Billable Status
Yes — Valid for Submission
Code Describes
Family history of other disorder of lipoprotein metabolism and other lipidemia
Short Description
Fam hx of disord of lipoprotein metab and other lipidemia
Parent Code
Z83.43
Family history of other disorder of lipoprotein metabolism and other lipidemias

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 CodeZ83.438Family history of other disorder of lipoprotein metabolism and other lipidemia

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z83.438.

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

Z83.438 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Tabular List NotesGuidance

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

Inclusion Terms

  • Family history of familial combined hyperlipidemia

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)
          • lipoprotein metabolism
    • History
      • family (of)
        • hyperlipidemia, familial combined
    • History
      • family (of)
        • lipidemia 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

Lipid Metabolism Disorders

Metabolism is the process your body uses to make energy from the food you eat. Food is made up of proteins, carbohydrates, and fats. Chemicals in your digestive system (enzymes) break the food parts down into sugars and acids, your body's fuel. Your body can use this fuel right away, or it can store the energy in your body tissues.

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement Z83.438 replaces the following previously assigned code(s):

  • Z83.49 - Family history of endo, nutritional and metabolic diseases
FY 2019AddedAdded to the ICD-10-CM code setEffective October 1, 2018.
FY 2020–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z83.438Overview

Is Z83.438 a billable code?

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

Can Z83.438 be a principal diagnosis?

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

Is Z83.438 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 disorder of lipoprotein metabolism and other lipidemia on inpatient claims.