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Z00.121

Z00.121: Encounter for routine child health examination with abnormal findings

Billable / specific codeICD-10-CMPOA exempt

Z00.121 is a billable, specific ICD-10-CM code for encounter for routine child health examination with abnormal findings. It is valid for submission on a claim.

Check Z00.121 with the rest of the claim: free scrubber

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Add a secondary code to capture the detail described below.

  • code to identify abnormal findings

Excludes1 inherited from the categories above Z00.121

A category’s note binds every code beneath it.

Written on Z00.12: Encounter for routine child health examination

  • health check for child under 29 days old (Z00.11-)
  • health supervision of foundling or other healthy infant or child (Z76.1-Z76.2)
  • newborn health examination (Z00.11-)

Written on Z00: Encounter for general examination without complaint, suspected or reported diagnosis

  • encounter for examination for administrative purposes (Z02.-)

Excludes2 inherited from the categories above Z00.121

Not part of this code, but both may be coded when both are present.

Written on Z00: Encounter for general examination without complaint, suspected or reported diagnosis

  • encounter for pre-procedural examinations (Z01.81-)
  • special screening examinations (Z11-Z13)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Examination›child›with abnormal findings
  • Hearing examination›infant or child›with abnormal findings
  • Screening›infant or child›with abnormal findings
  • Admission›vision examination›infant or child›with abnormal findings
  • Examination›hearing›infant or child›with abnormal findings
  • Examination›vision›infant or child›with abnormal findings
  • Immunization›appropriate for age›child›with abnormal findings
  • Test, tests, testing›hearing›infant or child›with abnormal findings
  • Test, tests, testing›vision›infant or child›with abnormal findings
  • Admission›examination at health care facility›hearing›infant or child›with abnormal findings
  • Admission›examination at health care facility›vision›infant or child›with abnormal findings

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Z00.12

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.