J18 vs O29
J18 (Pneumonia, unspecified organism) compared with O29 (Complications of anesthesia during pregnancy), 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. J18 carries an Excludes2 note covering O29: “aspiration pneumonia due to anesthesia during pregnancy (O29)”
Excludes2 marks distinct conditions — both may be reported when both are documented.
Side by side
| J18Pneumonia, unspecified organism | O29Complications of anesthesia during pregnancy | |
|---|---|---|
| Billing status | Non-billable header | Non-billable header |
| Classification | J00-J99 — Diseases of the Respiratory System (J00-J99) | O00-O9A — Pregnancy, Childbirth and the Puerperium (O00-O9A) |
| Definition | Pneumonia, unspecified organism is a non-billable ICD-10-CM category code (J18). | Complications of anesthesia during pregnancy is a non-billable ICD-10-CM category code (O29). |
| Includes | — | maternal complications arising from the administration of a general, regional or local anesthetic, analgesic or other sedation during pregnancy |
| Use additional code | code, if applicable, to identify resistance to antimicrobial drugs (Z16.-) | code, if necessary, to identify the complication |
| Code first | , if applicable, associated influenza (J09.X1, J10.0-, J11.0-) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources