G0400 HCPCS Level II Code: Home sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels
Medicare Coverage & Payment
- CMS short descriptor: Home sleep test/type 4 porta
- Medicare coverage: Carrier judgment (CMS coverage code C)
- Pricing indicator: 13
- BETOS: T2D — Other tests - other
- Last CMS action effective: March 13, 2008
Source: CMS HCPCS Level II release. Coverage codes indicate how Medicare treats the code, not whether a specific claim will be paid; payer policy and documentation still govern.
Contextual Map
Every relationship of G0400 in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.
Nearest codes (40)
- G0402 — Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment[Sibling]— CMS HCPCS Level II code set
- G0403 — Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report[Sibling]— CMS HCPCS Level II code set
- G0404 — Electrocardiogram, routine ecg with 12 leads; tracing only, without interpretation and report, performed as a screening for the initial preventive physical examination[Sibling]— CMS HCPCS Level II code set
- G0405 — Electrocardiogram, routine ecg with 12 leads; interpretation and report only, performed as a screening for the initial preventive physical examination[Sibling]— CMS HCPCS Level II code set
- G0406 — Follow-up inpatient consultation, limited, physicians typically spend 15 minutes communicating with the patient via telehealth[Sibling]— CMS HCPCS Level II code set
- G0407 — Follow-up inpatient consultation, intermediate, physicians typically spend 25 minutes communicating with the patient via telehealth[Sibling]— CMS HCPCS Level II code set
- G0408 — Follow-up inpatient consultation, complex, physicians typically spend 35 minutes communicating with the patient via telehealth[Sibling]— CMS HCPCS Level II code set
- G0409 — Social work and psychological services, directly relating to and/or furthering the patient's rehabilitation goals, each 15 minutes, face-to-face; individual (services provided by a corf-qualified social worker or psychologist in a corf)[Sibling]— CMS HCPCS Level II code set
- and 32 more
Change history
- March 13, 2008 — Added to the code set [Change history]— CMS release files (code change ledger)
Sources for this page
Codes, titles, notes, index terms and mappings on this page are transcribed from the datasets below. Relationships MedCoder computed and text MedCoder wrote are labelled where they appear.
- Code, descriptors, coverage and pricing attributes Official source data
- CMS HCPCS Alpha-Numeric (ANWEB) release — July 2026 quarterly update Release, file and checksum · Publisher’s page
- Change history and date-of-service validity Official source data
- CMS HCPCS quarterly update files, ingested into the change ledger Release, file and checksum · Publisher’s page
- Comparisons, relationships and the contextual map MedCoder structured relationship
- Computed by MedCoder from the tabular notes and tables above; every derived relationship is marked as derived where it appears
- Summary and FAQ answers MedCoder explanation
- Written by MedCoder to explain the sources above: drafted with AI assistance, checked by a person against the release files, and labelled as MedCoder text where it appears. Not official text.
Labels on this page: Official source data · MedCoder structured relationship · MedCoder explanation. How to read the labels · All data sources and release dates
Change history
- March 13, 2008Added to the code setHome sleep test (hst) with type iv portable monitor, unattended; minimum of 3 channels
Nearest Codes in This Family
Official HCPCS Level II classifications closest to G0400 in its code family, with their registry titles.
- G0402 — Initial preventive physical examination; face-to-face visit, services limited to new beneficiary during the first 12 months of medicare enrollment
- G0403 — Electrocardiogram, routine ecg with 12 leads; performed as a screening for the initial preventive physical examination with interpretation and report
- G0404 — Electrocardiogram, routine ecg with 12 leads; tracing only, without interpretation and report, performed as a screening for the initial preventive physical examination
- G0405 — Electrocardiogram, routine ecg with 12 leads; interpretation and report only, performed as a screening for the initial preventive physical examination
- G0406 — Follow-up inpatient consultation, limited, physicians typically spend 15 minutes communicating with the patient via telehealth
- G0407 — Follow-up inpatient consultation, intermediate, physicians typically spend 25 minutes communicating with the patient via telehealth
- G0408 — Follow-up inpatient consultation, complex, physicians typically spend 35 minutes communicating with the patient via telehealth
- G0409 — Social work and psychological services, directly relating to and/or furthering the patient's rehabilitation goals, each 15 minutes, face-to-face; individual (services provided by a corf-qualified…
- G0410 — Group psychotherapy other than of a multiple-family group, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutes
- G0411 — Interactive group psychotherapy, in a partial hospitalization or intensive outpatient setting, approximately 45 to 50 minutes