P03.81 vs Z05
P03.81 (Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm) compared with Z05 (Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).
Can these codes be reported together?
Yes, when both are documented. P03.81 carries an Excludes2 note covering Z05: “encounter for observation of newborn for suspected diseases and conditions ruled out (Z05.-)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| P03.81Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm | Z05Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) | Z00-Z99 — Factors Influencing Health Status and Contact with Health Services (Z00-Z99) |
| Definition | Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm is a non-billable ICD-10-CM category code (P03.81). | Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out is a non-billable ICD-10-CM category code (Z05). |
| Includes | — | 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. |
| Code first | any current condition in newborn | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources