M1183 – Documentation of immune checkpoint inhibitor therapy held and corticosteroids or immunosuppressants prescribed or administered
HCPCS Level II code · M codes: Medical Services and Quality Measures
HCPCS codeM1183
- Long description
- Documentation of immune checkpoint inhibitor therapy held and corticosteroids or immunosuppressants prescribed or administered
- Short description
- Doc imm ckpt inhib hld
- 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
Z2Undefined codes- Added
- January 1, 2023
- Last change
- January 1, 2023 – No change
Frequently asked questions
What is HCPCS code M1183?
M1183 is a HCPCS Level II code for documentation of immune checkpoint inhibitor therapy held and corticosteroids or immunosuppressants prescribed or administered.
Does Medicare cover M1183?
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 M codes
- M1175 – Documentation of medical reason(s) for not administering zoster vaccine (e.g., prior anaphylaxis due to the zoster vaccine)
- M1176 – Patient did not receive two doses of the herpes zoster recombinant vaccine (at least 28 days apart) on october 20, 2017, through the end of the measurement period
- M1177 – Patient received any pneumococcal conjugate or polysaccharide vaccine on or after their 19th birthday and before the end of the measurement period
- M1178 – Documentation of medical reason(s) for not administering pneumococcal vaccine (e.g., prior anaphylaxis due to the pneumococcal vaccine)
- M1179 – Patient did not receive any pneumococcal conjugate or polysaccharide vaccine, on or after their 19th birthday and before or during measurement period
- M1180 – Patients on immune checkpoint inhibitor therapy
- M1181 – Grade 2 or above diarrhea and/or grade 2 or above colitis
- M1182 – Patients not eligible due to pre-existing inflammatory bowel disease (ibd) (e.g., ulcerative colitis, crohn's disease)
- M1184 – Documentation of medical reason(s) for not prescribing or administering corticosteroid or immunosuppressant treatment (e.g., allergy, intolerance, infectious etiology, pancreatic insufficiency, hyperthyroidism, prior bowel surgical interventions, celiac disease, receiving other medication, awaiting diagnostic workup results for alternative etiologies, other medical reasons/contraindication)
- M1185 – Documentation of immune checkpoint inhibitor therapy not held and/or corticosteroids or immunosuppressants prescribed or administered was not performed, reason not given
- M1186 – Patients who have an order for or are receiving hospice or palliative care
- M1187 – Patients with a diagnosis of end stage renal disease (esrd)
- M1188 – Patients with a diagnosis of chronic kidney disease (ckd) stage 5
- M1189 – Documentation of a kidney health evaluation defined by an estimated glomerular filtration rate (egfr) and urine albumin-creatinine ratio (uacr) performed
- M1190 – Documentation of a kidney health evaluation was not performed or defined by an estimated glomerular filtration rate (egfr) and urine albumin-creatinine ratio (uacr)
- M1191 – Hospice services provided to patient any time during the measurement period
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.