M1164 – Patients with dementia any time during the patient's history through the end of the measurement period
HCPCS Level II code · M codes: Medical Services and Quality Measures
HCPCS codeM1164
- Long description
- Patients with dementia any time during the patient's history through the end of the measurement period
- Short description
- Pt w/ dementia any time
- 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 M1164?
M1164 is a HCPCS Level II code for patients with dementia any time during the patient's history through the end of the measurement period.
Does Medicare cover M1164?
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
- M1156 – Patient received active chemotherapy any time during the measurement period
- M1157 – Patient received bone marrow transplant any time during the measurement period
- M1158 – Patient had history of immunocompromising conditions prior to or during the measurement period
- M1159 – Hospice services provided to patient any time during the measurement period
- M1160 – Patient had anaphylaxis due to the meningococcal vaccine any time on or before the patient's 13th birthday
- M1161 – Patient had anaphylaxis due to the tetanus, diphtheria or pertussis vaccine any time on or before the patient's 13th birthday
- M1162 – Patient had encephalitis due to the tetanus, diphtheria or pertussis vaccine any time on or before the patient's 13th birthday
- M1163 – Patient had anaphylaxis due to the hpv vaccine any time on or before the patient's 13th birthday
- M1165 – Patients who use hospice services any time during the measurement period
- M1166 – Pathology report for tissue specimens produced from wide local excisions or re-excisions
- M1167 – In hospice or using hospice services during the measurement period
- M1168 – Patient received an influenza vaccine on or between july 1 of the year prior to the measurement period and june 30 of the measurement period
- M1169 – Documentation of medical reason(s) for not administering influenza vaccine (e.g., prior anaphylaxis due to the influenza vaccine)
- M1170 – Patient did not receive an influenza vaccine on or between july 1 of the year prior to the measurement period and june 30 of the measurement period
- M1171 – Patient received at least one td vaccine or one tdap vaccine between nine years prior to the encounter and the end of the measurement period
- M1172 – Documentation of medical reason(s) for not administering td or tdap vaccine (e.g., prior anaphylaxis due to the td or tdap vaccine or history of encephalopathy within seven days after a previous dose of a td-containing vaccine)
Source: CMS HCPCS Level II quarterly file, October 2026. Reference only – check payer policy before billing.