2024 ICD-10-CM Diagnosis Code Z28.39
Other underimmunization status
- ICD-10-CM Code:
- Z28.39
- ICD-10 Code for:
- Other underimmunization status
- Is Billable?
- Yes - Valid for Submission
- Code Navigator:
Z28.39 is a billable diagnosis code used to specify a medical diagnosis of other underimmunization status. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.
This code describes a circumstance which influences the patient's health status but not a current illness or injury. The code is unacceptable as a principal diagnosis.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Administration of human anti-D immunoglobulin needed
- Immunization advised
- Immunization due
- Immunization overdue
- Immunization series incomplete
- Inadequate immune status
- Influenza vaccination status
- Influenza vaccine needed
- Missed childhood immunizations
- Needs influenza immunization
- No history of procedure
- No known immunizations
- No known procedures
- No previous immunizations
- Noncompliance with immunization regimen
- Not immunized against pertussis
- Not up to date with immunization due to alternative schedule
- Not up to date with immunizations
- Procedure needed
- Procedure needed
- Procedure status unknown
- Requires a cholera booster
- Requires a course of cholera vaccination
- Requires a course of gamma globulin
- Requires a hepatitis A vaccination
- Requires a meningitis vaccination
- Requires a tetanus booster
- Requires a yellow fever vaccination
- Requires Bacillus Calmette-Guerin vaccination
- Requires course of hepatitis B vaccination
- Requires diphtheria, tetanus and pertussis vaccination
- Requires full course of tetanus vaccination
- Requires hepatitis B booster
- Requires influenza virus vaccination
- Requires measles, mumps and rubella vaccination
- Requires polio vaccination
- Requires rabies vaccination course
- Requires respiratory syncytial virus vaccination
- Requires rubella vaccination
- Requires tetanus and diphtheria vaccination
- Requires typhoid vaccination
- Requires vaccination
- Requires vaccination against arthropod-borne viral encephalitis
- Requires vaccination against cholera with typhoid-paratyphoid
- Requires vaccination against diphtheria
- Requires vaccination against diphtheria-tetanus-pertussis with poliomyelitis
- Requires vaccination against diphtheria-tetanus-pertussis with typhoid-paratyphoid
- Requires vaccination against leishmaniasis
- Requires vaccination against measles
- Requires vaccination against mumps
- Requires vaccination against pertussis
- Requires vaccination against plague
- Requires vaccination against Streptococcus pneumoniae
- Requires vaccination against tularemia
- Requires vaccination against typhoid-paratyphoid
- Requires vaccination against viral hepatitis
- Requires varicella vaccination
- Response to immunization
- Rubella antibody screening - told non-immune
- Rubella immunization status
- Under immunized
- Vaccination delayed
- Vaccination failure
- Vaccination needed
- Vaccination needed
Clinical Classification
Clinical Category is No immunization or underimmunization
- CCSR Category Code: FAC017
- Inpatient Default CCSR: X - Not applicable.
- Outpatient Default CCSR: X - Not applicable.
Tabular List of Diseases and Injuries
The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.
Inclusion Terms
Inclusion TermsThese 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.
- Delinquent immunization status
- Lapsed immunization schedule status
Index to Diseases and Injuries References
The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).
- - Delinquent immunization status - Z28.39
- - Lapsed immunization schedule status - Z28.39
- - Status (post) - See Also: Presence (of);
- - delinquent immunization - Z28.39
- - lapsed immunization schedule - Z28.39
- - underimmunization - Z28.39
- - Underimmunization status - Z28.39
Code Edits
The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10-CM Code Edits are applicable to this code:
- 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)
Z28.39 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.
CMS POA Indicator Options and Definitions
| POA Indicator | Reason for Code | CMS will pay the CC/MCC DRG? |
|---|---|---|
| Y | Diagnosis was present at time of inpatient admission. | YES |
| N | Diagnosis was not present at time of inpatient admission. | NO |
| U | Documentation insufficient to determine if the condition was present at the time of inpatient admission. | NO |
| W | Clinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission. | YES |
| 1 | Unreported/Not used - Exempt from POA reporting. | NO |
Replacement Code
Z2839 replaces the following previously assigned ICD-10-CM code(s):
- Z28.3 - Underimmunization status
Code History
- FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
- FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023