G8631 – Clinician documented that patient was not an eligible candidate for ordering prophylactic parenteral antibiotics to be given within one hour (if fluoroquinolone or vancomycin, two hours) prior to surgical incision (or start of procedure when no incision is required)
HCPCS Level II code · G codes: Procedures / Professional Services (Temporary)
HCPCS codeG8631
- Long description
- Clinician documented that patient was not an eligible candidate for ordering prophylactic parenteral antibiotics to be given within one hour (if fluoroquinolone or vancomycin, two hours) prior to surgical incision (or start of procedure when no incision is required)
- Short description
- Pt no elg 4 order antbi give
- Pricing indicator
00Not separately priced by Part B (bundled, not covered or Part A only)- Medicare coverage
CCarrier judgment – coverage decided by the Medicare contractor- BETOS category
M5BSpecialist - psychiatry- Added
- January 1, 2011
- Last change
- January 1, 2015 – No change
- Termination date
- December 31, 2014
Frequently asked questions
What is HCPCS code G8631?
G8631 is a HCPCS Level II code for clinician documented that patient was not an eligible candidate for ordering prophylactic parenteral antibiotics to be given within one hour (if fluoroquinolone or vancomycin, two hours) prior to surgical incision (or start of procedure when no incision is required). It was discontinued on December 31, 2014.
Does Medicare cover G8631?
The HCPCS file lists coverage code C: Carrier judgment – coverage decided by the Medicare contractor. Coverage and payment also depend on local coverage determinations and the patient’s plan.
Nearby G codes
- G8599 – Aspirin or another antiplatelet therapy not used, reason not given
- G8600 – Iv thrombolytic therapy initiated within 4.5 hours (<= 270 minutes) of time last known well
- G8601 – Iv thrombolytic therapy not initiated within 4.5 hours (<= 270 minutes) of time last known well for reasons documented by clinician (e.g. patient enrolled in clinical trial for stroke, patient admitted for elective carotid intervention)
- G8602 – Iv thrombolytic therapy not initiated within 4.5 hours (<= 270 minutes) of time last known well, reason not given
- G8627 – Surgical procedure performed within 30 days following cataract surgery for major complications (e.g., retained nuclear fragments, endophthalmitis, dislocated or wrong power iol, retinal detachment, or wound dehiscence)
- G8628 – Surgical procedure not performed within 30 days following cataract surgery for major complications (e.g., retained nuclear fragments, endophthalmitis, dislocated or wrong power iol, retinal detachment, or wound dehiscence)
- G8629 – Documentation of order for prophylactic parenteral antibiotic to be given within one hour (if fluoroquinolone or vancomycin, two hours) prior to surgical incision (or start of procedure when no incision is required)
- G8630 – Documentation that administration of prophylactic parenteral antibiotics was initiated within one hour (if fluoroquinolone or vancomycin, two hours) prior to surgical incision (or start of procedure when no incision is required), as ordered
- G8632 – Prophylactic parenteral antibiotics were not ordered to be given or given within one hour (if fluoroquinolone or vancomycin, two hours) prior to the surgical incision (or start of procedure when no incision is required), reason not given
- G8633 – Pharmacologic therapy (other than minerals/vitamins) for osteoporosis prescribed
- G8634 – Clinician documented patient not an eligible candidate to receive pharmacologic therapy for osteoporosis
- G8635 – Pharmacologic therapy for osteoporosis was not prescribed, reason not given
- G8645 – I intend to report the asthma measures group
- G8646 – All quality actions for the applicable measures in the asthma measures group have been performed for this patient
- G8647 – Residual score for the knee impairment successfully calculated and the score was equal to zero (0) or greater than zero (> 0)
- G8648 – Residual score for the knee impairment successfully calculated and the score was less than zero (< 0)
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.