2026 ICD-10-CM Diagnosis Code Z86.12Personal history of poliomyelitis

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z86

ICD-10-CM Z86.12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z86.12 is a billable ICD-10-CM diagnosis code for personal history of poliomyelitis. 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. Coders also document this condition as H/O: poliomyelitis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Personal history of other disease.

Code Identity

ICD-10-CM Code
Z86.12
Billable Status
Yes — Valid for Submission
Code Describes
Personal history of poliomyelitis
Short Description
Personal history of poliomyelitis
Same as the full description in the CMS dataset.
Parent Code
Z86.1
Personal history of infectious and parasitic diseases

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
CategoryZ86Personal history of certain other diseases
This CodeZ86.12Personal history of poliomyelitis

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z86.12.

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

Z86.12 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.

  • H/O: poliomyelitis
  • History of infectious disease of central nervous system

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
      • personal (of)
        • disease or disorder (of)
          • infectious
            • poliomyelitis

Clinical ClassificationClinical

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

CCSR FAC030
Personal history of other disease
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Polio and Post-Polio Syndrome

Polio, or poliomyelitis, is a disease that spreads from person to person. It is caused by the poliovirus. The virus attacks the nervous system. In serious cases, it can cause paralysis (where you can't move parts of the body). The paralysis may be lifelong and can sometimes be life-threatening.

The full article covers:

  • What is polio?
  • How does polio spread?
  • Who is more likely to develop polio?
  • What are the symptoms of polio?
  • What is post-polio syndrome (PPS)?
  • How is polio diagnosed?
  • What are the treatments for polio and post-polio syndrome (PPS)?
  • Can polio be prevented?

Read the full article at MedlinePlus

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

Convert Z86.12 to ICD-9-CMHistory

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

ICD-9-CM
V12.02 Prsnl hst poliomyelitis
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 Z86.12Overview

Is Z86.12 (Personal history of infectious and parasitic diseases) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report personal history of poliomyelitis on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Can Z86.12 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of poliomyelitis describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z86.12 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 personal history of poliomyelitis on inpatient claims.

What is the ICD-9 equivalent of Z86.12?

Under the General Equivalence Mappings, personal history of poliomyelitis converts to ICD-9-CM V12.02 (prsnl hst poliomyelitis). The mapping is a direct match.