M1477 HCPCS Level II code: Diagnosis of delirium
M1477 is the HCPCS code for “Diagnosis of delirium” in CMS’s October 2026 release, in effect from Oct 1, 2026.
Official description
M1477Diagnosis of delirium
Short description: Dx delirium
HCPCS · United States
Medicare details
The indicators CMS publishes with M1477 in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Medicare pricing
- Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)
- Type of service
- Medical care
- BETOS category
- Undefined codes
- Added
- Jan 1, 2026
Where M1477 sits
- 1M codesMedical services and quality measures
- 2Active code M1477Diagnosis of delirium
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code M1477 mean?
M1477 is the HCPCS code for “Diagnosis of delirium” in CMS’s HCPCS Level II October 2026 release.
Does Medicare cover M1477?
CMS lists M1477’s Medicare coverage as “Carrier judgment” and its pricing as “Service not separately priced by Part B (e.g., services not covered, bundled, used by Part A only, etc.)”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside M1477
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