O75.2 vs R50
O75.2 (Pyrexia during labor, not elsewhere classified) compared with R50 (Fever of other and unknown origin), 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. R50 carries an Excludes1 note covering O75.2: “fever of unknown origin during labor (O75.2)”
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
| O75.2Pyrexia during labor, not elsewhere classified | R50Fever of other and unknown origin | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Pyrexia during labor, not elsewhere classified is a billable ICD-10-CM diagnosis code (O75.2). | Fever of other and unknown origin is a non-billable ICD-10-CM category code (R50). |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources