Temporary G codes are assigned to services and procedures that are under review before being included in the CPT coding system. Payment for these services is under the jurisdiction of the local carriers.

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• G8809

  Rh-immunoglobulin (rhogam) ordered

• G8810

  Rh-immunoglobulin (rhogam) not ordered for reasons documented by clinician (e.g., patient had prior documented receipt of rhogam within 12 weeks, patient refusal)

• G8811

  Documentation rh-immunoglobulin (rhogam) was not ordered, reason not given

• G8815

  Documented reason in the medical records for why the statin therapy was not prescribed (i.e., lower extremity bypass was for a patient with non-artherosclerotic disease)

• G8816

  Statin medication prescribed at discharge

• G8817

  Statin therapy not prescribed at discharge, reason not given

• G8818

  Patient discharge to home no later than post-operative day #7

• G8825

  Patient not discharged to home by post-operative day #7

• G8826

  Patient discharged to home no later than post-operative day #2 following evar

• G8833

  Patient not discharged to home by post-operative day #2 following evar

• G8834

  Patient discharged to home no later than post-operative day #2 following cea

• G8838

  Patient not discharged to home by post-operative day #2 following cea

• G8839

  Sleep apnea symptoms assessed, including presence or absence of snoring and daytime sleepiness

• G8840

  Documentation of reason(s) for not documenting an assessment of sleep symptoms (e.g., patient didn't have initial daytime sleepiness, patient visited between initial testing and initiation of therapy)

• G8841

  Sleep apnea symptoms not assessed, reason not given

• G8842

  Apnea hypopnea index (ahi), respiratory disturbance index (rdi) or respiratory event index (rei) documented or measured within 2 months after initial evaluation for suspected obstructive sleep apnea

• G8843

  Documentation of reason(s) for not measuring an apnea hypopnea index (ahi), a respiratory disturbance index (rdi), or a respiratory event index (rei) within 2 months after initial evaluation for suspected obstructive sleep apnea (e.g., medical, neurological, or psychiatric disease that prohibits successful completion of a sleep study, patients for whom a sleep study would present a bigger risk than benefit or would pose an undue burden, dementia, patients previously diagnosed with osa and severity assessed by another provider, patients who decline ahi/rdi/rei measurement, patients who had a financial reason for not completing testing, test was ordered but not completed, patients decline because their insurance (payer) does not cover the expense)

• G8844

  Apnea hypopnea index (ahi), respiratory disturbance index (rdi), or respiratory event index (rei) not documented or measured within 2 months after initial evaluation for suspected obstructive sleep apnea, reason not given

• G8845

  Positive airway pressure therapy prescribed

• G8846

  Moderate or severe obstructive sleep apnea (apnea hypopnea index (ahi) or respiratory disturbance index (rdi) of 15 or greater)

• G8848

  Mild obstructive sleep apnea (apnea hypopnea index (ahi) or respiratory disturbance index (rdi) of less than 15)

• G8849

  Documentation of reason(s) for not prescribing positive airway pressure therapy (e.g., patient unable to tolerate, alternative therapies use, patient declined, financial, insurance coverage)

• G8850

  Positive airway pressure therapy not prescribed, reason not given

• G8851

  Adherence to therapy was assessed at least annually through an objective informatics system or through self-reporting (if objective reporting is not available, documented)

• G8852

  Positive airway pressure therapy was prescribed

• G8853

  Positive airway pressure therapy not prescribed

• G8854

  Documentation of reason(s) for not objectively reporting adherence to evidence-based therapy (e.g., patients who have been diagnosed with a terminal or advanced disease with an expected life span of less than 6 months, patients who decline therapy, patients who do not return for follow-up at least annually, patients unable to access/afford therapy, patient's insurance will not cover therapy)

• G8855

  Adherence to therapy was not assessed at least annually through an objective informatics system or through self-reporting (if objective reporting is not available), reason not given

• G8856

  Referral to a physician for an otologic evaluation performed

• G8857

  Patient is not eligible for the referral for otologic evaluation measure (e.g., patients who are already under the care of a physician for acute or chronic dizziness)

• G8858

  Referral to a physician for an otologic evaluation not performed, reason not given

• G8859

  Patient receiving corticosteroids greater than or equal to 10mg/day for 60 or greater consecutive days

• G8860

  Patients who have received dose of corticosteroids greater than or equal to 10mg/day for 60 or greater consecutive days

• G8861

  Within the past 2 years, central dual-energy x-ray absorptiometry (dxa) ordered and documented, review of systems and medication history or pharmacologic therapy (other than minerals/vitamins) for osteoporosis prescribed

• G8862

  Patients not receiving corticosteroids greater than or equal to 10mg/day for 60 or greater consecutive days

• G8863

  Patients not assessed for risk of bone loss, reason not given

• G8864

  Pneumococcal vaccine administered or previously received

• G8865

  Documentation of medical reason(s) for not administering or previously receiving pneumococcal vaccine (e.g., patient allergic reaction, potential adverse drug reaction)

• G8866

  Documentation of patient reason(s) for not administering or previously receiving pneumococcal vaccine (e.g., patient refusal)

• G8867

  Pneumococcal vaccine not administered or previously received, reason not given

• G8868

  Patients receiving a first course of anti-tnf therapy

• G8869

  Patient has documented immunity to hepatitis b and initiating anti-tnf therapy

• G8870

  Hepatitis b vaccine injection administered or previously received and is receiving a first course of anti-tnf therapy

• G8871

  Patient not receiving a first course of anti-tnf therapy

• G8872

  Excised tissue evaluated by imaging intraoperatively to confirm successful inclusion of targeted lesion

• G8873

  Patients with needle localization specimens which are not amenable to intraoperative imaging such as mri needle wire localization, or targets which are tentatively identified on mammogram or ultrasound which do not contain a biopsy marker but which can be verified on intraoperative inspection or pathology (e.g., needle biopsy site where the biopsy marker is remote from the actual biopsy site)

• G8874

  Excised tissue not evaluated by imaging intraoperatively to confirm successful inclusion of targeted lesion

• G8875

  Clinician diagnosed breast cancer preoperatively by a minimally invasive biopsy method

• G8876

  Documentation of reason(s) for not performing minimally invasive biopsy to diagnose breast cancer preoperatively (e.g., lesion too close to skin, implant, chest wall, etc., lesion could not be adequately visualized for needle biopsy, patient condition prevents needle biopsy [weight, breast thickness, etc.], duct excision without imaging abnormality, prophylactic mastectomy, reduction mammoplasty, excisional biopsy performed by another physician)

• G8877

  Clinician did not attempt to achieve the diagnosis of breast cancer preoperatively by a minimally invasive biopsy method, reason not given

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HCPCS Level II codes and descriptors are approved and maintained jointly by the alpha-numeric editorial panel (consisting of CMS, the Health Insurance Association of America, and the Blue Cross and Blue Shield Association). — Updated 6/4/2026

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