G0461 HCPCS Level II Code: Immunohistochemistry or immunocytochemistry, per specimen; first single or multiplex antibody stain
Medicare Coverage & Payment
- CMS short descriptor: Immunohisto/cyto chem 1st st
- Medicare coverage: Carrier judgment (CMS coverage code C)
- Pricing indicator: 13
- BETOS: T1G — Lab tests - other (Medicare fee schedule)
- Last CMS action effective: January 1, 2015
- Terminated: December 31, 2014
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.
Code Set: Removed from the code set — not valid on or after January 1, 2015.
Contextual Map
Every relationship of G0461 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)
- G0437 — Smoking and tobacco cessation counseling visit for the asymptomatic patient; intensive, greater than 10 minutes[Sibling]— CMS HCPCS Level II code set
- G0438 — Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit[Sibling]— CMS HCPCS Level II code set
- G0439 — Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit[Sibling]— CMS HCPCS Level II code set
- G0442 — Annual alcohol misuse screening, 5 to 15 minutes[Sibling]— CMS HCPCS Level II code set
- G0443 — Brief face-to-face behavioral counseling for alcohol misuse, 15 minutes[Sibling]— CMS HCPCS Level II code set
- G0444 — Annual depression screening, 5 to 15 minutes[Sibling]— CMS HCPCS Level II code set
- G0445 — High intensity behavioral counseling to prevent sexually transmitted infection; face-to-face, individual, includes: education, skills training and guidance on how to change sexual behavior; performed semi-annually, 30 minutes[Sibling]— CMS HCPCS Level II code set
- G0446 — Annual, face-to-face intensive behavioral therapy for cardiovascular disease, individual, 15 minutes[Sibling]— CMS HCPCS Level II code set
- and 32 more
Change history (2)
- January 1, 2015 — Removed from the code set [Change history]— CMS release files (code change ledger)
- and 1 more
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
- January 1, 2015Removed from the code setImmunohistochemistry or immunocytochemistry, per specimen; first single or multiplex antibody stain
- January 1, 2014Added to the code setImmunohistochemistry or immunocytochemistry, per specimen; first single or multiplex antibody stain
Nearest Codes in This Family
Official HCPCS Level II classifications closest to G0461 in its code family, with their registry titles.
- G0456 — Negative pressure wound therapy, (e.g. vacuum assisted drainage collection) using a mechanically-powered device, not durable medical equipment, including provision of cartridge and dressing(s),…
- G0457 — Negative pressure wound therapy, (e.g. vacuum assisted drainage collection) using a mechanically-powered device, not durable medical equipment, including provision of cartridge and dressing(s),…
- G0458 — Low dose rate (ldr) prostate brachytherapy services, composite rate
- G0459 — Inpatient telehealth pharmacologic management, including prescription, use, and review of medication with no more than minimal medical psychotherapy
- G0460 — Autologous platelet rich plasma or other blood-derived product for non-diabetic chronic wounds/ulcers, including as applicable phlebotomy, centrifugation or mixing, and all other preparatory…
- G0462 — Immunohistochemistry or immunocytochemistry, per specimen; each additional single or multiplex antibody stain (list separately in addition to code for primary procedure)
- G0463 — Hospital outpatient clinic visit for assessment and management of a patient
- G0464 — Colorectal cancer screening; stool-based dna and fecal occult hemoglobin (e.g., kras, ndrg4 and bmp3)
- G0465 — Autologous platelet rich plasma (prp) or other blood-derived product for diabetic chronic wounds/ulcers, using an fda-cleared device for this indication, (includes as applicable administration,…
- G0466 — Federally qualified health center (fqhc) visit, new patient; a medically-necessary, face-to-face encounter (one-on-one) between a new patient and a fqhc practitioner during which time one or more…