2027 ICD-10-CM Diagnosis Code Z86.73Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z86

ICD-10-CM Z86.73
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z86.73 is a billable ICD-10-CM diagnosis code for personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. 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 Personal history of other disease.

Code Identity

ICD-10-CM Code
Z86.73
Billable Status
Yes — Valid for Submission
Code Describes
Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits
Short Description
Prsnl hx of TIA (TIA), and cereb infrc w/o resid deficits
Parent Code
Z86.7
Personal history of diseases of the circulatory system

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 CodeZ86.73Personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z86.73.

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

Z86.73 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.

  • Chronic cerebrovascular accident
  • H/O: Stroke in last year
  • History of cardioembolic stroke
  • History of cerebellar stroke
  • History of cerebrovascular accident
  • History of cerebrovascular accident due to ischemia
  • History of cerebrovascular accident greater than eight weeks in the past
  • History of cerebrovascular accident in last eight weeks
  • History of cerebrovascular accident with intracranial hemorrhage
  • History of cerebrovascular accident with residual deficit
  • History of cerebrovascular accident without residual deficits
  • History of embolic cerebrovascular accident
  • History of embolic stroke without deficits
  • History of embolic stroke without residual deficits
  • History of hemorrhagic cerebrovascular accident without residual deficits
  • History of ischemic stroke without residual deficits
  • History of lacunar cerebrovascular accident
  • History of parietal cerebrovascular accident
  • History of thrombotic stroke without residual deficits
  • History of transient ischemic attack
  • History of transient ischemic attack due to embolism

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z86.73: its own notes plus those printed at Z86.7, Z86, 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.

  • Personal history of prolonged reversible ischemic neurological deficit (PRIND)
  • Personal history of stroke NOS without residual deficits

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • personal history of traumatic brain injury (Z87.820)
  • sequelae of cerebrovascular disease (I69.-)

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 Z86.7 Personal history of diseases of the circulatory system applies to 6 codes
  • old myocardial infarction (I25.2)
  • personal history of anaphylactic shock (Z87.892)
  • postmyocardial infarction syndrome (I24.1)

Code First

The underlying condition named in the note is sequenced before this code.

From Z86 Personal history of certain other diseases applies to 40 codes
  • any follow-up examination after treatment (Z09)

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 Z86.73, its category, or a range that includes it.

Excludes1 4

These codes carry an Excludes1 note naming Z86.73: they are not reported together with it, unless the two conditions are unrelated.

  • I69 Sequelae of cerebrovascular disease
    personal history of cerebral infarction without residual deficit (Z86.73)
  • I69 Sequelae of cerebrovascular disease
    personal history of prolonged reversible ischemic neurologic deficit (PRIND) (Z86.73)
  • I69 Sequelae of cerebrovascular disease
    personal history of reversible ischemic neurologcial deficit (RIND) (Z86.73)
  • Z87.820 Personal history of traumatic brain injury
    personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits (Z86.73)

Excludes2 1

These codes carry an Excludes2 note naming Z86.73: its condition is not part of those codes, and both may be reported when the patient has both.

  • I63 Cerebral infarction
    chronic, without residual deficits (sequelae) (Z86.73)

Use Additional Code 1

These codes say to use an additional code from the note, and Z86.73 is one of the codes named.

  • Z09 Encounter for follow-up examination after completed treatment for conditions other than malignant neoplasm
    code to identify any applicable history of disease code (Z86.-, Z87.-) names Z86.-, 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 FAC030
Personal history of other disease
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Stroke

A stroke happens when there is a loss of blood flow to part of the brain. Your brain cells cannot get the oxygen and nutrients they need from blood, and they start to die within a few minutes. This can cause lasting brain damage, long-term disability, or even death.

The full article covers:

  • What is a stroke?
  • What are the types of stroke?
  • Who is at risk for a stroke?
  • What are the symptoms of a stroke?
  • How are strokes diagnosed?
  • What are the treatments for stroke?
  • Can strokes be prevented?

Read the full article at MedlinePlus

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

Convert Z86.73 to ICD-9-CMHistory

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

ICD-9-CM
V12.54 Hx TIA/stroke w/o resid
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z86.73Overview

Is Z86.73 (Personal history of diseases of the circulatory system) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z86.73 group to?

On inpatient claims, personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.

Can Z86.73 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of transient ischemic attack (TIA), and cerebral infarction without residual deficits describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z86.73 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 transient ischemic attack (TIA), and cerebral infarction without residual deficits 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.

Can Z86.73 be reported with Z87.820?

Not as a rule. The Excludes1 note on Z86.73 lists "personal history of traumatic brain injury (Z87.820)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).