2027 ICD-10-CM Diagnosis Code Z95.1Presence of aortocoronary bypass graft

ICD-10-CM Codes›Z00–Z99›Z77-Z99›Z95

ICD-10-CM Z95.1
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z95.1 is a billable ICD-10-CM diagnosis code for presence of aortocoronary bypass graft. 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 Coronary atherosclerosis and other heart disease; and Implant, device or graft related encounter.

Code Identity

ICD-10-CM Code
Z95.1
Billable Status
Yes — Valid for Submission
Code Describes
Presence of aortocoronary bypass graft
Short Description
Presence of aortocoronary bypass graft
Same as the full description in the CMS dataset.
Parent Code
Z95
Presence of cardiac and vascular implants and grafts

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
CategoryZ95Presence of cardiac and vascular implants and grafts
This CodeZ95.1Presence of aortocoronary bypass graft

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z95.1.

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

Z95.1 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.

  • Acute deep vein thrombosis of bilateral upper limbs following coronary artery bypass graft
  • Acute deep vein thrombosis of bilateral upper limbs following procedure
  • Acute deep vein thrombosis of left upper limb following coronary artery bypass graft
  • Acute deep vein thrombosis of left upper limb following procedure
  • Acute deep vein thrombosis of right upper limb following coronary artery bypass graft
  • Acute deep vein thrombosis of right upper limb following procedure
  • Acute deep vein thrombosis of upper extremity following coronary artery bypass graft
  • Acute deep venous thrombosis of bilateral upper extremities
  • Acute deep venous thrombosis of left upper extremity
  • Acute deep venous thrombosis of right upper extremity
  • Aortocoronary artery bypass graft repeated
  • Aortocoronary bypass graft present
  • Bypass stent graft present
  • Coronary artery bypass graft stent present
  • Coronary artery graft present
  • Coronary bypass graft finding
  • History of aortofemoral bypass surgery
  • History of arterial bypass of lower limb artery
  • History of coronary artery bypass grafting
  • History of myocardial infarction following coronary artery bypass graft
  • History of placement of stent for coronary artery disease
  • History of placement of stent in coronary artery bypass graft

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z95.1: its own notes plus those printed at Z95, 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.

  • Presence of coronary artery bypass graft

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 Z95 Presence of cardiac and vascular implants and grafts applies to 13 codes
  • complications of cardiac and vascular devices, implants and grafts (T82.-)

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 Z95.1, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming Z95.1: they are not reported together with it, unless the two conditions are unrelated.

  • Z18 Retained foreign body fragments
    in situ cardiac device (Z95.-) names Z95.-, which includes this code

Excludes2 4

These codes carry an Excludes2 note naming Z95.1: its condition is not part of those codes, and both may be reported when the patient has both.

  • Z45.018 Encounter for adjustment and management of other part of cardiac pacemaker
    presence of prosthetic and other devices (Z95.1-Z95.5, Z95.811-Z97)
  • Z87.7 Personal history of (corrected) congenital malformations
    presence of cardiac and vascular implants and grafts (Z95.-) names Z95.-, which includes this code
  • Z94 Transplanted organ and tissue status
    presence of vascular grafts (Z95.-) names Z95.-, which includes this code
  • Z46 Encounter for fitting and adjustment of other devices
    presence of prosthetic and other devices (Z95-Z97) names Z95-Z97, 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 CIR011
Coronary atherosclerosis and other heart disease
Default principal diagnosis: inpatient No · outpatient Yes
CCSR FAC009
Implant, device or graft related encounter
Default principal diagnosis: inpatient No · outpatient No

Patient EducationClinical

Coronary Artery Bypass Surgery

Coronary artery bypass surgery creates a new path for blood to flow to your heart. This surgery is sometimes called a coronary artery bypass graft (CABG) or heart bypass. It's the most common heart surgery in adults. You may need this surgery if you have a blocked or partially blocked artery in your heart.

The full article covers:

  • What is coronary artery bypass surgery?
  • Who might benefit from coronary artery bypass surgery?
  • What happens during coronary artery bypass surgery?
  • Are there any risks from coronary artery bypass surgery?

Read the full article at MedlinePlus

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

Convert Z95.1 to ICD-9-CMHistory

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

ICD-9-CM
V45.81 Aortocoronary bypass
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 Z95.1Overview

What is the ICD-10 code for presence of aortocoronary bypass graft?

The ICD-10-CM code for presence of aortocoronary bypass graft is Z95.1 (sometimes written as Z951). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z95.1 (Presence of cardiac and vascular implants and grafts) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report presence of aortocoronary bypass graft on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z95.1 group to?

On inpatient claims, presence of aortocoronary bypass graft 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 Z95.1 be a principal diagnosis?

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

Is Z95.1 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 presence of aortocoronary bypass graft 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.