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ICD-10-CM Code Z23
Encounter for immunization

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
POA Exempt
POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.
| ICD-10 from 2011 - 2016

Z23 is a billable ICD code used to specify a diagnosis of encounter for immunization. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

IndicatorMeaningCMS Will Pay CC/MCC DRG Costs
YDiagnosis was present at time of inpatient admissionYes
NDiagnosis was not present at time of inpatient admissionNo
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.No
WClinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.Yes
1Exempt from POA reportingNo


Coding Notes for Z23 Info for medical coders on how to properly use this ICD-10 code

codeFirst:
Any routine childhood examination
Code Notes:
Procedure codes are required to identify the types of immunizations given

MS-DRG Mapping

  • DRG Group #795 - Normal newborn.
  • DRG Group #951 - Other factors influencing health status.

Related Concepts SNOMET-CT

  • Measles vaccination requested (situation)

Coding Advice SNOMET-CT

  • Consider additional code to identify specific condition or disease

ICD-10-CM Alphabetical Index References for 'Z23 - Encounter for immunization'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Z23. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Need for prophylactic vaccination and inoculation against unspecified single disease (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code Z23 and a single ICD9 code, V05.9 is an approximate match for comparison and conversion purposes.


** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Z23