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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• G9837

  Trastuzumab not administered within 12 months of diagnosis

• G9838

  Patient has metastatic disease at diagnosis

• G9839

  Anti-egfr monoclonal antibody therapy

• G9840

  Ras (kras and nras) gene mutation testing performed before initiation of anti-egfr moab

• G9841

  Ras (kras and nras) gene mutation testing not performed before initiation of anti-egfr moab

• G9842

  Patient has metastatic disease at diagnosis

• G9843

  Ras (kras or nras) gene mutation

• G9844

  Patient did not receive anti-egfr monoclonal antibody therapy

• G9845

  Patient received anti-egfr monoclonal antibody therapy

• G9846

  Patients who died from cancer

• G9847

  Patient received systemic cancer-directed therapy in the last 14 days of life

• G9848

  Patient did not receive systemic cancer-directed therapy in the last 14 days of life

• G9849

  Patients who died from cancer

• G9850

  Patient had more than one emergency department visit in the last 30 days of life

• G9851

  Patient had one or less emergency department visits in the last 30 days of life

• G9852

  Patients who died from cancer

• G9853

  Patient admitted to the icu in the last 30 days of life

• G9854

  Patient was not admitted to the icu in the last 30 days of life

• G9855

  Patients who died from cancer

• G9856

  Patient was not admitted to hospice

• G9857

  Patient admitted to hospice

• G9858

  Patient enrolled in hospice

• G9859

  Patients who died from cancer

• G9860

  Patient spent less than three days in hospice care

• G9861

  Patient spent greater than or equal to three days in hospice care

• G9862

  Documentation of medical reason(s) for not recommending at least a 10 year follow-up interval (e.g., inadequate prep, familial or personal history of colonic polyps, patient had no adenoma and age is = 66 years old, or life expectancy < 10 years old, other medical reasons)

• G9868

  Receipt and analysis of remote, asynchronous images for dermatologic and/or ophthalmologic evaluation, for use only in a medicare-approved cmmi model, less than 10 minutes

• G9869

  Receipt and analysis of remote, asynchronous images for dermatologic and/or ophthalmologic evaluation, for use only in a medicare-approved cmmi model, 10-20 minutes

• G9870

  Receipt and analysis of remote, asynchronous images for dermatologic and/or ophthalmologic evaluation, for use only in a medicare-approved cmmi model, more than 20 minutes

• G9871

  Behavioral counseling for diabetes prevention, online, 60 minutes

• G9873

  First medicare diabetes prevention program (mdpp) core session was attended by an mdpp beneficiary under the mdpp expanded model (em). a core session is an mdpp service that: (1) is furnished by an mdpp supplier during months 1 through 6 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for core sessions

• G9874

  Four total medicare diabetes prevention program (mdpp) core sessions were attended by an mdpp beneficiary under the mdpp expanded model (em). a core session is an mdpp service that: (1) is furnished by an mdpp supplier during months 1 through 6 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for core sessions

• G9875

  Nine total medicare diabetes prevention program (mdpp) core sessions were attended by an mdpp beneficiary under the mdpp expanded model (em). a core session is an mdpp service that: (1) is furnished by an mdpp supplier during months 1 through 6 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for core sessions

• G9876

  Two medicare diabetes prevention program (mdpp) core maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 7-9 under the mdpp expanded model (em). a core maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 7 through 12 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions. the beneficiary did not achieve at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at a core maintenance session in months 7-9

• G9877

  Two medicare diabetes prevention program (mdpp) core maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 10-12 under the mdpp expanded model (em). a core maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 7 through 12 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions. the beneficiary did not achieve at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at a core maintenance session in months 10-12

• G9878

  Two medicare diabetes prevention program (mdpp) core maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 7-9 under the mdpp expanded model (em). a core maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 7 through 12 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions.the beneficiary achieved at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at a core maintenance session in months 7-9

• G9879

  Two medicare diabetes prevention program (mdpp) core maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 10-12 under the mdpp expanded model (em). a core maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 7 through 12 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions. the beneficiary achieved at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at a core maintenance session in months 10-12

• G9880

  The mdpp beneficiary achieved at least 5% weight loss (wl) from his/her baseline weight in months 1-12 of the mdpp services period under the mdpp expanded model (em). this is a one-time payment available when a beneficiary first achieves at least 5% weight loss from baseline as measured by an in-person weight measurement at a core session or core maintenance session

• G9881

  The mdpp beneficiary achieved at least 9% weight loss (wl) from his/her baseline weight in months 1-24 under the mdpp expanded model (em). this is a one-time payment available when a beneficiary first achieves at least 9% weight loss from baseline as measured by an in-person weight measurement at a core session, core maintenance session, or ongoing maintenance session

• G9882

  Two medicare diabetes prevention program (mdpp) ongoing maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 13-15 under the mdpp expanded model (em). an ongoing maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 13 through 24 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions. the beneficiary maintained at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at an ongoing maintenance session in months 13-15

• G9883

  Two medicare diabetes prevention program (mdpp) ongoing maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 16-18 under the mdpp expanded model (em). an ongoing maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 13 through 24 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions. the beneficiary maintained at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at an ongoing maintenance session in months 16-18

• G9884

  Two medicare diabetes prevention program (mdpp) ongoing maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 19-21 under the mdpp expanded model (em). an ongoing maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 13 through 24 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions. the beneficiary maintained at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at an ongoing maintenance session in months 19-21

• G9885

  Two medicare diabetes prevention program (mdpp) ongoing maintenance sessions (ms) were attended by an mdpp beneficiary in months (mo) 22-24 under the mdpp expanded model (em). an ongoing maintenance session is an mdpp service that: (1) is furnished by an mdpp supplier during months 13 through 24 of the mdpp services period; (2) is approximately 1 hour in length; and (3) adheres to a cdc-approved dpp curriculum for maintenance sessions. the beneficiary maintained at least 5% weight loss (wl) from his/her baseline weight, as measured by at least one in-person weight measurement at an ongoing maintenance session in months 22-24

• G9886

  Behavioral counseling for diabetes prevention, in-person, group, 60 minutes

• G9887

  Behavioral counseling for diabetes prevention, distance learning, 60 minutes

• G9888

  Maintenance 5% wl from baseline weight in months 7-12

• G9890

  Bridge payment: a one-time payment for the first medicare diabetes prevention program (mdpp) core session, core maintenance session, or ongoing maintenance session furnished by an mdpp supplier to an mdpp beneficiary during months 1-24 of the mdpp expanded model (em) who has previously received mdpp services from a different mdpp supplier under the mdpp expanded model. a supplier may only receive one bridge payment per mdpp beneficiary

• G9891

  Mdpp session reported as a line-item on a claim for a payable mdpp expanded model (em) hcpcs code for a session furnished by the billing supplier under the mdpp expanded model and counting toward achievement of the attendance performance goal for the payable mdpp expanded model hcpcs code (this code is for reporting purposes only)

• G9892

  Documentation of patient reason(s) for not performing a dilated macular examination

• G9893

  Dilated macular exam was not performed, reason not otherwise specified

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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 6/5/2026

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