G9354 HCPCS Level II Code: One ct scan or no ct scan of the paranasal sinuses ordered within 90 days after the date of diagnosis

Contextual Map

Every relationship of G9354 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)

• G9324 — All necessary data elements not included, reason not given[Sibling]— CMS HCPCS Level II code set
• G9325 — Ct studies not reported to a radiation dose index registry due to medical reasons (eg, ct studies performed for radiation treatment planning or image-guided radiation treatment delivery)[Sibling]— CMS HCPCS Level II code set
• G9326 — Ct studies performed not reported to a radiation dose index registry that is capable of collecting at a minimum all necessary data elements, reason not given[Sibling]— CMS HCPCS Level II code set
• G9327 — Ct studies performed reported to a radiation dose index registry that is capable of collecting at a minimum all necessary data elements[Sibling]— CMS HCPCS Level II code set
• G9328 — Dicom format image data availability not documented in final report due to medical reasons (eg, ct studies performed for radiation treatment planning or image-guided radiation treatment delivery)[Sibling]— CMS HCPCS Level II code set
• G9329 — Dicom format image data available to non-affiliated external healthcare facilities or entities on a secure, media free, reciprocally searchable basis with patient authorization for at least a 12-month period after the study not documented in final report, reason not given[Sibling]— CMS HCPCS Level II code set
• G9340 — Final report documented that dicom format image data available to non-affiliated external healthcare facilities or entities on a secure, media free, reciprocally searchable basis with patient authorization for at least a 12-month period after the study[Sibling]— CMS HCPCS Level II code set
• G9341 — Search conducted for prior patient ct studies completed at non-affiliated external healthcare facilities or entities within the past 12-months and are available through a secure, authorized, media-free, shared archive prior to an imaging study being performed[Sibling]— CMS HCPCS Level II code set
• and 32 more

Change history

• January 1, 2014 — 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

Nearest Codes in This Family

Official HCPCS Level II classifications closest to G9354 in its code family, with their registry titles.

• G9349 — Ct scan of the paranasal sinuses ordered at the time of diagnosis or received within 28 days after date of diagnosis
• G9350 — Ct scan of the paranasal sinuses not ordered at the time of diagnosis or received within 28 days after date of diagnosis
• G9351 — More than one ct scan of the paranasal sinuses ordered or received within 90 days after diagnosis
• G9352 — More than one ct scan of the paranasal sinuses ordered or received within 90 days after the date of diagnosis, reason not given
• G9353 — More than one ct scan of the paranasal sinuses ordered or received within 90 days after the date of diagnosis for documented reasons (eg, patients with complications, second ct obtained prior to…
• G9355 — Elective delivery (without medical indication) by cesarean birth or induction of labor not performed (<39 weeks of gestation)
• G9356 — Elective delivery (without medical indication) by cesarean birth or induction of labor performed (<39 weeks of gestation)
• G9357 — Post-partum screenings, evaluations and education performed
• G9358 — Post-partum screenings, evaluations and education not performed
• G9359 — Documentation of negative or managed positive tb screen with further evidence that tb is not active prior to treatment with a biologic immune response modifier