2026 ICD-10-CM Diagnosis Code Z82.0Family history of epilepsy and other diseases of the nervous system

ICD-10-CM Codes›Z00–Z99›Z77-Z99›leading to disablement

ICD-10-CM Z82.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z82.0 is a billable ICD-10-CM diagnosis code for family history of epilepsy and other diseases of the nervous system. 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
Z82.0
Billable Status
Yes — Valid for Submission
Code Describes
Family history of epilepsy and other diseases of the nervous system
Short Description
Family history of epilepsy and oth dis of the nervous sys
Parent Code
Z82
Family history of certain disabilities and chronic diseases (leading to disablement)

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
Categoryleading to disablementFamily history of certain disabilities and chronic diseases (Z82)
This CodeZ82.0Family history of epilepsy and other diseases of the nervous system

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z82.0.

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

Z82.0 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 acute medical disorder
  • Family history of amyotrophic lateral sclerosis
  • Family history of ataxia
  • Family history of Charcot-Marie-Tooth disease
  • Family history of dementia
  • Family history of disorder of peripheral nervous system
  • Family history of disorder of skeletal and/or smooth muscle
  • Family history of familial dysautonomia
  • Family history of headache disorder
  • Family history of movement disorder
  • Family history of narcolepsy
  • Family history of neoplasm of central nervous system
  • Family history of neoplasm of skin
  • Family history of neurological disorder
  • Family history of neuropathy
  • Family history of Parkinson's disease
  • Family history of periodic limb movement disorder
  • Family history of restless legs syndrome
  • Family history of seizure disorder
  • Family history of sleep apnea
  • Family history of spinocerebellar ataxia
  • Family history of Steinert myotonic dystrophy
  • Family history of transient ischemic attack
  • Family history of trigeminal neuralgia
  • Family history of tuberous sclerosis
  • Family history: Cerebral palsy
  • FH: Brain disorder
  • FH: CNS disorder
  • FH: Epilepsy
  • FH: Hemiplegia
  • FH: Huntington's chorea
  • FH: Migraine
  • FH: Motor neurone disease
  • FH: Multiple sclerosis
  • FH: Muscular dystrophy
  • FH: Paraplegia
  • FH: Parkinsonism

Tabular List NotesGuidance

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

Inclusion Terms

  • Conditions classifiable to G00 G99

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)
          • neurological NEC
    • History
      • family (of)
        • epilepsy
    • History
      • family (of)
        • Huntington's chorea

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

Epilepsy

Epilepsy is a brain disorder that causes people to have recurring seizures. The seizures happen when clusters of nerve cells, or neurons, in the brain send out the wrong signals. People may have strange sensations and emotions or behave strangely. They may have violent muscle spasms or lose consciousness.

Read the full article at MedlinePlus

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

Convert Z82.0 to ICD-9-CMHistory

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

ICD-9-CM
V17.2 Fam hx-neurolog dis NEC
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 Z82.0Overview

Is Z82.0 a billable code?

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

Can Z82.0 be a principal diagnosis?

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

Is Z82.0 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 epilepsy and other diseases of the nervous system on inpatient claims.

What is the ICD-9 equivalent of Z82.0?

Under the General Equivalence Mappings, family history of epilepsy and other diseases of the nervous system converts to ICD-9-CM V17.2 (fam hx-neurolog dis NEC). The mapping is a direct match.