2026 ICD-10-CM Diagnosis Code Z71.85Encounter for immunization safety counseling
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 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified encounters and counseling.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z71.85.
Present on Admission (POA)Billing
Z71.85 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Encounter for vaccine product safety counseling
Code Also
- , if applicable, encounter for immunization Z23
Type 1 Excludes
- encounter for health counseling related to travel Z71.84
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A "code also" note instructs that two codes may be required to fully describe a condition, but this note does not provide sequencing direction.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- immunization safety - Z71.85
- vaccine product safety - Z71.85
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Counseling(for)
- immunization safety
- Counseling(for)
- vaccine product safety
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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
Questions About Z71.85Overview
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, 2025 through September 30, 2026.
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.
