HCPCS Level II · Procedures and professional services (temporary)
G9831Ajcc stage at breast cancer diagnosis = ii or iii
✓ Active
Source: CMS HCPCS quarterly update, October 2026. Page updated September 29, 2026.
About G9831
G9831 is an HCPCS Level II code in the G series (procedures and professional services (temporary)), describing ajcc stage at breast cancer diagnosis = ii or iii.
It was added to HCPCS effective 01/01/2017.
Its Medicare coverage code is "C", meaning coverage is left to the Medicare contractor's judgment.
Details
- Short description
- Ajcc stg brt ca dx ii or iii
- Date added
- 01/01/2017
- Action effective
- 01/01/2017
- BETOS
- Z2
Related G98xx codes
- G9805Patients who use hospice services any time during the measurement period
- G9806Patients who received cervical cytology or an hpv test
- G9807Patients who did not receive cervical cytology or an hpv test
- G9812Patient died including all deaths occurring during the hospitalization in which the operation was performed, even if after 30 days, and those deaths occurring after discharge from the hospital, but within 30 days of the procedure
- G9813Patient did not die within 30 days of the procedure or during the index hospitalization
- G9818Documentation of sexual activity
- G9819Patients who use hospice services any time during the measurement period
- G9820Documentation of a chlamydia screening test with proper follow-up
- G9821No documentation of a chlamydia screening test with proper follow-up
- G9822Patients who had an endometrial ablation procedure during the 12 months prior to the index date (exclusive of the index date)
- G9823Endometrial sampling or hysteroscopy with biopsy and results documented during the 12 months prior to the index date (exclusive of the index date) of the endometrial ablation
- G9824Endometrial sampling or hysteroscopy with biopsy and results not documented during the 12 months prior to the index date (exclusive of the index date) of the endometrial ablation
Common questions about G9831
Is HCPCS G9831 still valid?
- Yes. G9831 is active in the CMS October 2026 HCPCS file.
Does Medicare cover G9831?
- Its coverage code is "C": coverage is left to the Medicare contractor's judgment. Check the local coverage determination for your region.