2027 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 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

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 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 795, 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as family history of hypobetalipoproteinemia. 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 the other POA exempt codes in Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Family history of hypobetalipoproteinemia

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z83.438: its own notes plus those printed at Z83, block Z77-Z99, and Chapter 21. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Family history of familial combined hyperlipidemia

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Z83 Family history of other specific disorders applies to 19 codes
  • contact with and (suspected) exposure to communicable disease in the family (Z20.-)

Code Also

A second code may be needed to fully describe the condition; the note gives no sequencing direction.

From Block Z77-Z99 Persons with potential health hazards related to family and personal history and certain conditions influencing health status applies to 567 codes
  • any follow-up examination (Z08-Z09)

Notes

General instructions on how these codes are used.

From Chapter 21 (Z00-Z99) Factors influencing health status and contact with health services applies to 1,425 codes
  • Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
  • (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
  • (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name Z83.438, its category, or a range that includes it.

Use Additional Code 1

These codes say to use an additional code from the note, and Z83.438 is one of the codes named.

  • Z15 Genetic susceptibility to disease
    code, if applicable, for any associated family history of the disease (Z80-Z84) names Z80-Z84, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

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 2020–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

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, 2026 through September 30, 2027.

What MS-DRG does Z83.438 group to?

On inpatient claims, family history of other disorder of lipoprotein metabolism and other lipidemia maps to MS-DRG 951, 795, with relative weights from 0.2022 to 0.5574 depending on complications. Higher weights mean higher Medicare reimbursement.

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. The code appears in the Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) range of the CMS exempt list.