2024 ICD-10-CM Diagnosis Code Z00.121

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

• 1 year examination abnormal - for observation
• 1 year examination abnormal - on treatment
• 1 year examination abnormal - referred
• 10 day examination abnormal - for observation
• 10 day examination abnormal - on treatment
• 10 year examination abnormal - for observation
• 10 year examination abnormal - on treatment
• 10 year examination abnormal - referred
• 15 year examination abnormal - for observation
• 15 year examination abnormal - on treatment
• 15 year examination abnormal - referred
• 18 month examination abnormal - for observation
• 18 month examination abnormal - on treatment
• 18 month examination abnormal - referred
• 2.5 year examination abnormal - for observation
• 2.5 year examination abnormal - on treatment
• 2.5 year examination abnormal - referred
• 3.5 year examination abnormal - for observation
• 3.5 year examination abnormal - on treatment
• 3.5 year examination abnormal - referred
• 4.5 year examination abnormal - for observation
• 4.5 year examination abnormal - on treatment
• 4.5 year examination abnormal - referred
• 6 week examination abnormal - for observation
• 6 week examination abnormal - on treatment
• 6 week examination abnormal - referred
• 8 month examination abnormal - for observation
• 8 month examination abnormal - on treatment
• 8 month examination abnormal - referred
• 8 week examination abnormal - for observation
• 8 week examination abnormal - on treatment
• 8 week examination abnormal - referred
• 8-9 month examination abnormal - for observation
• 8-9 month examination abnormal - on treatment
• 8-9 month examination abnormal - referred
• Abnormal wellness exam
• Child 21 month examination abnormal - for observation
• Child 21 month examination abnormal - on treatment
• Child 21 month examination abnormal: refer
• Child 3 year exam abnormal - for observation
• Child 3 year exam abnormal - on treatment
• Child 3 year exam abnormal - referred
• Child 39 month examination abnormal - for observation
• Child 39 month examination abnormal - on treatment
• Child 39 month examination abnormal - referred
• Child 6 month examination abnormal - for observation
• Child 6 month examination abnormal - on treatment
• Child 6 month examination abnormal - referred
• Child 7 month examination abnormal - on treatment
• Child 7 month examination abnormal - referred
• Seen by pediatric neurologist
• Seen by pediatric oncologist
• Seen by pediatrician
• Seen by pediatrician

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:

• Pediatric diagnoses - The Medicare Code Editor detects inconsistencies in pediatric cases by checking a patient's age and any diagnosis on the patient's record. The pediatric code edits apply to patients age range is 0–17 years inclusive (e.g., Reye's syndrome, routine child health exam).
• 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)

Z00.121 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

Convert Z00.121 to ICD-9-CM

• ICD-9-CM Code: V20.2 - Routin child health exam
  Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education

Health Checkup

Regular health exams and tests can help find problems before they start. They also can help find problems early, when your chances for treatment and cure are better. Which exams and screenings you need depends on your age, health and family history, and lifestyle choices such as what you eat, how active you are, and whether you smoke.

To make the most of your next check-up, here are some things to do before you go:

• Review your family medical history
• Find out if you are due for any general screenings or vaccinations
• Write down a list of issues and questions to take with you

Centers for Disease Control and Prevention

[Learn More in MedlinePlus]

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
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.