P03.81 vs P29.1
P03.81 (Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm) compared with P29.1 (Neonatal cardiac dysrhythmia), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. P03.81 carries an Excludes1 note covering P29.1: “neonatal cardiac dysrhythmia (P29.1-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| P03.81Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm | P29.1Neonatal cardiac dysrhythmia | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) |
| Definition | Newborn affected by abnormality in fetal (intrauterine) heart rate or rhythm is a non-billable ICD-10-CM category code (P03.81). | Neonatal cardiac dysrhythmia is a non-billable ICD-10-CM category code (P29.1). |
| 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