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Z05

Z05: Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out

Non-billable headerICD-10-CM

Z05 is a non-billable header ICD-10-CM code for encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out. It cannot be billed on its own: choose one of the more specific child codes below.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • This category is to be used for newborns, within the neonatal period (the first 28 days of life), who are suspected of having an abnormal condition, but without signs or symptoms, and which, after examination and observation, is ruled out.

Other codes that can never be billed with Z05

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z03Encounter for medical observation for suspected diseases and conditions ruled out

Risk adjustment

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

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Z05

10 child codes. Green means billable.

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.