9001F CPT Reimbursement & Benchmarks

CPT code 9001F documents aortic aneurysm presence on CT with a maximum diameter of less than 5.0 cm. This measure records a specific clinical finding — the size-based characterization of the largest artery’s focal dilation — which is relevant for surveillance, clinical decision-making, and quality reporting. Nationally, structured documentation of aneurysm size supports appropriate follow-up intervals, population-level monitoring, and consistency in clinical records.

Key payers covered in this analysis include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the code’s clinical intent, common settings where the code is used, and the types of reporting and benchmarking content typically associated with size-based imaging documentation. The publication summarizes how 9001F fits into imaging and vascular disease workflows and what to expect in terms of service context and usage patterns.

The report provides benchmarks where available, notes of policy relevance for national payers, and the clinical context necessary to interpret the code’s meaning within care pathways for patients with thoracic or abdominal aortic aneurysms. Data not provided in the input (such as modifiers, associated taxonomies, specific ICD-10 diagnosis codes, or related billing lines) are noted as unavailable in respective detailed sections.

Billing Code Overview

CPT code 9001F documents an aortic aneurysm identified on a computed tomographic (CT) imaging study with a maximum diameter less than 5.0 cm. The entry indicates the provider has measured and recorded the aneurysm size and its characterization on CT.

Service type: Diagnostic imaging assessment / imaging interpretation and documentation of aneurysm size

Typical site of service: Hospital radiology department or outpatient imaging center, where CT imaging studies are performed and interpreted.

Clinical Context

A 68-year-old male with a history of hypertension and tobacco use is referred to vascular surgery after an incidental finding of an abdominal aortic aneurysm on an abdominal computed tomography (CT) scan performed for unrelated evaluation. The CT report documents a fusiform aortic aneurysm with a maximum transverse diameter of 4.6 cm. The vascular surgery provider reviews the imaging, documents the aneurysm and its size, assesses growth risk factors, and schedules surveillance imaging and follow-up. Typical workflow steps include review of prior imaging and measurements, focused history and examination addressing risk factors for expansion or rupture, documentation of aneurysm diameter and location in the medical record, counseling regarding surveillance interval, and ordering interval CT or ultrasound surveillance per institutional protocols.

Coding Specifications

Modifier	Description	When to Use
`25`	Significant, separately identifiable evaluation and management service by the same physician on the day of a procedure	Use when an unrelated E/M is provided and documented on the same day as documentation of the imaging-based aneurysm measurement or planning visit.
`26`	Professional component

Taxonomy Code	Specialty	Notes
`207RV0200X`	Vascular Surgery	Primary specialty that evaluates and manages aortic aneurysms and documents imaging measurements.
`207R00000X`	General Surgery	May perform evaluation and operative intervention for aneurysms depending on practice.
`207Q00000X`	Cardiology	Provides medical management and surveillance coordination for aortic disease in some settings.
`208D00000X`	Radiology	Interpreting radiologists generate CT measurement reports and official imaging interpretations.
`207L00000X`	Thoracic Surgery	Manages thoracic aortic aneurysms and operative planning when aneurysm location is thoracic.

Related Diagnoses

ICD-10 Code	Description	Clinical Relevance
`I71.4`	Abdominal aortic aneurysm, without rupture	Most common diagnosis code for a documented abdominal aortic aneurysm under surveillance when diameter is less than intervention threshold.
`I71.3`	Thoracic aortic aneurysm, without rupture	Used when the aneurysm is located in the thoracic aorta and is documented on CT with a diameter under intervention threshold.
`I71.9`	Aortic aneurysm, unspecified site, without rupture	Used when documentation does not specify thoracic versus abdominal site but an unruptured aneurysm is present.
`I10`	Essential (primary) hypertension	Common comorbidity and risk factor documented in the medical record that affects surveillance and management.
`Z13.6`	Encounter for screening for cardiovascular disorders	May be used when the aneurysm is identified during screening or incidental imaging and the visit is for evaluation/surveillance.

Related CPT Codes

CPT Code	Description	Relationship to This Procedure
`72193`	Magnetic resonance (MRI) lumbar spine without contrast (example imaging CPT)	Data not available in the input.
`74177`	Computed tomography, abdomen and pelvis; with contrast material	Common cross-sectional study used to detect and measure abdominal aortic aneurysms; often the index study documenting size.
`76775`	Ultrasound, abdominal aorta, real time with image documentation, follow-up or limited study for measurement	Common surveillance modality for abdominal aortic aneurysm measurement and follow-up when CT is not indicated.
`93975`	Duplex scan of abdominal aorta and/or bilateral iliac arteries; limited study	Alternative sonographic evaluation used for aneurysm surveillance or initial assessment.
`33361`	Endovascular repair of ruptured abdominal aortic aneurysm; bifurcated stent graft	Example of a definitive therapeutic procedure performed when aneurysm meets size or symptom criteria; follows surveillance and documentation.

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Summary & Overview

CPT 9001F: Aortic Aneurysm on CT, Max Diameter <5.0 cm