2027 ICD-10-CM Diagnosis Code Z71.85Encounter for immunization safety counseling

ICD-10-CM Codes›Z00–Z99›Z69-Z76›Z71

ICD-10-CM Z71.85
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

Z71.85 is a billable ICD-10-CM diagnosis code for encounter for immunization safety counseling. 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 Other specified encounters and counseling.

Code Identity

ICD-10-CM Code
Z71.85
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for immunization safety counseling
Short Description
Encounter for immunization safety counseling
Same as the full description in the CMS dataset.
Parent Code
Z71.8
Other specified counseling

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ69-Z76Persons encountering health services in other circumstances
CategoryZ71Persons encountering health services for other counseling and medical advice, not elsewhere classified
This CodeZ71.85Encounter for immunization safety counseling

Code EditsBilling

Medicare Code Editor checks that affect claim validity for Z71.85.

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

Z71.85 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons encountering health services in other circumstances (Z69-Z76).

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to Z71.85: its own notes plus those printed at Z71.8, Z71, 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.

  • Encounter for vaccine product safety counseling

Excludes1

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

  • encounter for health counseling related to travel (Z71.84)

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 Z71.8 Other specified counseling applies to 8 codes
  • counseling for contraception (Z30.0-)
From Z71 Persons encountering health services for other counseling and medical advice, not elsewhere classified applies to 19 codes
  • contraceptive or procreation counseling (Z30-Z31)
  • sex counseling (Z70.-)

Code Also

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

  • if applicable, encounter for immunization (Z23)
  • if applicable, immunization not carried out (Z28.-)

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 Z71.85, its category, or a range that includes it.

Code Also 2

These codes say Z71.85 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • Z23 Encounter for immunization
    if applicable, encounter for immunization safety counseling (Z71.85)
  • Z28 Immunization not carried out and underimmunization status
    if applicable, encounter for immunization safety counseling (Z71.85)

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 FAC012
Other specified encounters and counseling
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Vaccine Safety

Vaccines play an important role in keeping us healthy. They protect us from serious and sometimes deadly diseases. Vaccines are injections (shots), liquids, pills, or nasal sprays that you take to teach your body's immune system to recognize and defend against harmful germs. The germs could be viruses or bacteria.

The full article covers:

  • What are vaccines?
  • Do vaccines cause side effects?
  • How are vaccines tested for safety?

Read the full article at MedlinePlus

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

Code History & ChangesHistory

Replacement Z71.85 replaces the following previously assigned code(s):

  • Z71.89 - Other specified counseling
FY 2022AddedAdded to the ICD-10-CM code setEffective October 1, 2021.
FY 2023–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About Z71.85Overview

What is the ICD-10 code for encounter for immunization safety counseling?

The ICD-10-CM code for encounter for immunization safety counseling is Z71.85 (sometimes written as Z7185). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is Z71.85 (Other specified counseling) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for immunization safety counseling on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does Z71.85 group to?

On inpatient claims, encounter for immunization safety counseling 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 Z71.85 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because encounter for immunization safety counseling describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

Is Z71.85 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 encounter for immunization safety counseling on inpatient claims. The code appears in the Persons encountering health services in other circumstances (Z69-Z76) range of the CMS exempt list.