ICD-10-CM 2027 diagnosis code
Z71.85Encounter for immunization safety counseling
Z71.85 is a valid, billable ICD-10-CM code for encounter for immunization safety counseling. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS, effective October 1, 2026. Updated September 29, 2026. About our data
About Z71.85
Z71.85 is the ICD-10-CM diagnosis code for encounter for immunization safety counseling. It belongs to category Z71 (persons encountering health services for other counseling and medical advice, not elsewhere classified), block Z69-Z76 (persons encountering health services in other circumstances) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within Z71.8 (other specified counseling), Z71.85 is specifically for encounter for immunization safety counseling. Related codes cover Spiritual or religious counseling (Z71.81), exercise counseling (Z71.82), encounter for nonprocreative genetic counseling (Z71.83), encounter for health counseling related to travel (Z71.84), encounter for pediatric-to-adult transition counseling (Z71.87), encounter for counseling for socioeconomic factors (Z71.88) and other specified counseling (Z71.89).
Don't report Z71.85 together with the conditions in its Excludes1 note: encounter for health counseling related to travel (Z71.84).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.
It was added in FY2022, effective October 1, 2021.
Coding notes
- Encounter for vaccine product safety counseling
- encounter for health counseling related to travel (Z71.84)
Notes that apply from higher levels
Instructions written at a parent level also apply to Z71.85.
› From Z71.8 Other specified counseling
- counseling for contraception (Z30.0-)
Broader instructions also apply from Chapter 21: Factors influencing health status and contact with health services.
Alphabetic index entries
2 entriesTerms in the official ICD-10-CM index that lead to Z71.85.
Codes whose notes reference Z71.85
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2022 (effective 10/1/2021): Added
- No changes since FY2022.
Common questions about Z71.85
Is Z71.85 billable?
- Yes. Z71.85 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z71.85 be used as a principal diagnosis?
- No. It is not acceptable as the principal diagnosis for an inpatient stay; it may be reported as a secondary diagnosis.
Is Z71.85 a CC or MCC?
- No. Z71.85 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does Z71.85 group to?
- Z71.85 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.