G9956 HCPCS Level II Code: Patient received combination therapy consisting of at least two prophylactic pharmacologic anti-emetic agents of different classes preoperatively and/or intraoperatively
Medicare Coverage & Payment
- CMS short descriptor: Combo thrpy of >= 2 prophly
- Medicare coverage: Carrier judgment (CMS coverage code C)
- Payment category: Service not separately priced (pricing indicator 00)
- BETOS: Z2 — Undefined codes
- Last CMS action effective: January 1, 2018
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 G9956 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)
- G9932 — Documentation of patient reason(s) for not having records of negative or managed positive tb screen (e.g., patient does not return for mantoux (ppd) skin test evaluation)[Sibling]— CMS HCPCS Level II code set
- G9933 — Adenoma(s) or colorectal cancer detected during screening colonoscopy[Sibling]— CMS HCPCS Level II code set
- G9934 — Documentation that neoplasm detected is only diagnosed as traditional serrated adenoma, sessile serrated polyp, or sessile serrated adenoma[Sibling]— CMS HCPCS Level II code set
- G9935 — Adenoma(s) or colorectal cancer not detected during screening colonoscopy[Sibling]— CMS HCPCS Level II code set
- G9936 — Surveillance colonoscopy - personal history of colonic polyps, colon cancer, or other malignant neoplasm of rectum, rectosigmoid junction, and anus[Sibling]— CMS HCPCS Level II code set
- G9937 — Diagnostic colonoscopy[Sibling]— CMS HCPCS Level II code set
- G9938 — Patients aged 66 or older in institutional special needs plans (snp) or residing in long-term care with pos code 32, 33, 34, 54, or 56 for more than 90 consecutive days during the six months prior to the measurement period through december 31 of the measurement period[Sibling]— CMS HCPCS Level II code set
- G9939 — Pathologists/dermatopathologists is the same clinician who performed the biopsy[Sibling]— CMS HCPCS Level II code set
- and 32 more
Change history
- January 1, 2018 — 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
- January 1, 2018Added to the code setPatient received combination therapy consisting of at least two prophylactic pharmacologic anti-emetic agents of different classes preoperatively and/or intraoperatively
Nearest Codes in This Family
Official HCPCS Level II classifications closest to G9956 in its code family, with their registry titles.
- G9947 — Leg pain was measured by the visual analog scale (vas) within three months preoperatively and at three months (6 to 20 weeks) postoperatively
- G9948 — Patient had any additional spine procedures performed on the same date as the lumbar discectomy/laminectomy
- G9949 — Leg pain was not measured by the visual analog scale (vas) or numeric pain scale at three months (6 - 20 weeks) postoperatively
- G9954 — Patient exhibits 2 or more risk factors for post-operative vomiting
- G9955 — Cases in which an inhalational anesthetic is used only for induction
- G9957 — Documentation of medical reason for not receiving combination therapy consisting of at least two prophylactic pharmacologic anti-emetic agents of different classes preoperatively and/or…
- G9958 — Patient did not receive combination therapy consisting of at least two prophylactic pharmacologic anti-emetic agents of different classes preoperatively and/or intraoperatively
- G9959 — Systemic antimicrobials not prescribed
- G9960 — Documentation of medical reason(s) for prescribing systemic antimicrobials
- G9961 — Systemic antimicrobials prescribed