P28.89 vs Q31
P28.89 (Other specified respiratory conditions of newborn) compared with Q31 (Congenital malformations of larynx), 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. Q31 carries an Excludes1 note covering P28.89: “congenital laryngeal stridor NOS (P28.89)”
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
| P28.89Other specified respiratory conditions of newborn | Q31Congenital malformations of larynx | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) | Q00-Q99 — Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99) |
| Definition | Other specified respiratory conditions of newborn is a billable ICD-10-CM diagnosis code (P28.89). | Congenital malformations of larynx is a non-billable ICD-10-CM category code (Q31). |
| Includes | Congenital laryngeal stridor Sniffles in newborn Snuffles 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