Medicare Part B Immunos and Oncology Drugs Calc

Description

Free HTML/Javascript Based Copay Calculator for Medicare Part B Immunosuppressants and Oncology Drugs.

Note: Traditional Medicare Part B covers 80% of the costs for the following immunosuppressants and oncology drugs listed below. This calculator predicts the 20% copay the patient is responsible for.

Usage

This web-based calculator is deployed via GitHub pages and can be accessed from any web browser at the following link

Documentation

Pricing files are reported each quarter and can be found at the following link

Drug Class	HCPCS Code	Drug Name	HCPCS Code Strength	Available Strengths	Notes
Immunosuppressant	J7500	IMURAN (azathioprine)	50 mg	25 mg, 50 mg, 75 mg, 100 mg
Immunosuppressant	J7502	NEORAL (cyclosporine)	100 mg	100 mg
Immunosuppressant	J7503	ENVARSUS XR (tacrolimus ER)	0.25 mg	0.75 mg, 1 mg, 4 mg
Immunosuppressant	J7507	PROGRAF (tacrolimus)	1 mg	0.5 mg, 1 mg, 5 mg
Immunosuppressant	J7508	ASTAGRAF XL (tacrolimus ER)	0.1 mg	0.5 mg, 1 mg, 5 mg
Immunosuppressant	J7509	methylPREDNISolone	4 mg	4 mg, 8 mg, 16 mg, 32 mg
Immunosuppressant	J7510	predniSOLONE	5 mg	5 mg
Immunosuppressant	J7512	predniSONE	1 mg	1 mg, 5 mg, 10 mg
Immunosuppressant	J7515	NEORAL (cyclosporine)	25 mg	25 mg
Immunosuppressant	J7517	CELLCEPT (mycophenolate mofetil)	250 mg	250 mg, 500 mg
Immunosuppressant	J7518	MYFORTIC (mycophenolic acid)	180 mg	180 mg, 360 mg
Immunosuppressant	J7520	RAPAMUNE (sirolimus)	1 mg	0.5 mg, 1 mg
Immunosuppressant	J7521	PROGRAF Granules (tacrolimus)	0.1 mg	0.2 mg, 1 mg	Added April 2025
Immunosuppressant	J7527	ZORTRESS (everolimus)	0.25 mg	0.25 mg, 0.5 mg, 0.75 mg
Immunosuppressant	J7528	CELLCEPT susp (mycophenolate mofetil)	100 mg	200 mg/mL	Added January 2026
Oncology	J8520	XELODA (capecitabine)	150 mg	150 mg	Depricated October 2025
Oncology	J8521	XELODA (capecitabine)	500 mg	500 mg	Depricated October 2025
Oncology	J8522	XELODA (capecitabine)	50 mg	150 mg, 500 mg	Added October 2025
Oncology	J8530	CYTOXAN (cyclophosphamide)	25 mg	25 mg, 50 mg
Oncology	J8560	VEPESID (etoposide)	50 mg	50 mg
Oncology	J8610	methotrexate	2.5mg	2.5mg
Oncology	J8700	TEMODAR (temozolomide)	5 mg	5 mg, 20 mg, 100 mg, 140 mg, 180 mg, 250 mg
Oncology	J8705	HYCAMTIN (topotecan)	0.25 mg	0.25 mg, 1 mg

Medicare payment (80%) is calculated using the following formula:

$$ Medicare = \frac{(Strength) * (Payment Limit) * (Tablets)}{(HCPCS Strength)} $$

Copayment (20%) is calcated using the following formula:

$$ Copay = Medicare * 0.25 $$

Proof:

$$ \frac{Medicare}{Total} = \frac{80}{100} $$

$$ Total * 80 = Medicare * 100 $$

$$ Total = Medicare * 1.25 $$

$$ Total * 0.2 = Medicare * 1.25 * 0.2 $$

$$ Total * 0.2 = Medicare * 0.25 $$