Common codes
| Code | Used for | Base units |
|---|---|---|
| 00940 | Vaginal procedures, not otherwise specified | 3 |
| 00944 | Vaginal hysterectomy | 6 |
| 00952 | Hysteroscopy and hysterosalpingography | 4 |
| 00840 | Lower abdominal intraperitoneal procedures, including laparoscopy | 6 |
Base units shown are the standard values most payers use. Check your payer and the current year's CMS base unit file before relying on them.
Tips
- Laparoscopic cases: most are lower abdominal, so 00840 often applies. Check whether a more specific code fits.
- Office-based gyn procedures: if you work in a physician's office, see office-based anesthesia billing.
- Code from the operative note. A hysteroscopy can turn into something bigger once it starts.
This article is general information, not billing, legal or tax advice. Payer rules change; always check current guidance.
Sources
- CMS: Medicare Claims Processing Manual, Chapter 12 (Anesthesia)
- Maryland Workers' Compensation Commission: anesthesia base unit values