Carelon (formerly AIM) Advanced Imaging/Radiology CPT and HCPCS Codes
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Lists CPT and HCPCS codes in-scope for Carelon Advanced Imaging/Radiology management programs for Commercial and Medicare Advantage products; indicates medical necessity is determined by Carelon clinical guidelines and notes prior authorization exceptions and radiotracer PA requirements.
No material clinical or coverage changes in this revision.
Coverage Criteria and Authorization Rules
Coverage linkage to clinical guidelines
Codes listed below are in-scope for Carelon-managed advanced imaging programs; medical necessity determinations are governed by Carelon (AIM/Carelon) clinical guidelines.
Authorization exceptions and radiotracer PA rules
Prior authorization requirements and exceptions for listed vascular and radiotracer codes are specified below.
CPT and HCPCS Codes by Imaging Category
| 0648T | Quantitative magnetic resonance for analysis of tissue composition (eg, fat, iron, water content), including multiparametric data acquisition, data preparation and transmission, interpretation and report, obtained without diagnostic MRI examination of the same anatomy during the same session; single organ |
| 0649T | Quantitative magnetic resonance for analysis of tissue composition (eg, fat, iron, water content), including multiparametric data acquisition, data preparation and transmission, interpretation and report, obtained with diagnostic MRI examination of the same anatomy (eg, organ, gland, tissue, target structure); single organ (List separately in addition to code for primary procedure) |
| 72192 | CT pelvis without contrast |
| 72193 | CT pelvis with contrast |
| 72194 | CT pelvis without contrast followed by re-imaging with contrast |
| 72195 | MRI pelvis without contrast |
| 0042T | Cerebral perfusion analysis using computed tomography with contrast administration, including post-processing of parametric maps with determination of cerebral blood flow, cerebral blood volume, and mean transit time |
| 70450 | CT head/brain without contrast |
| 70551 | MRI brain (including brain stem) without contrast |
| 70450 | CT head/brain without contrast |
| 70460 | CT head/brain with contrast |
| 70496 | CT angiography head, with contrast material(s), including noncontrast images, if performed, and image post-processing |
| 71275 | CT angiography of chest (non-coronary), with contrast material(s); including non-contrast images, if performed, and image post-processing |
| 72191 | CT angiography pelvis, with contrast material(s), including non-contrast images, if performed, and image post-processing |
| 70552 | MRI brain (including brain stem) with contrast |
| 72141 | MRI spinal canal and contents, cervical; without contrast |
| 74150 | CT abdomen without contrast |
| 78811 | PET imaging; limited area |
| A9552 | Fluorodeoxyglucose F-18 diagnostic, per study dose, up to 45 millicuries |
| A9593 | Gallium Ga-68 PSMA-11 diagnostic |
| A9800 | Gallium Ga-68 gozetotide diagnostic (locametz) |
Provider Responsibilities and Authorization Notes
Scope and medical necessity linkage
The following CPT and HCPCS codes are in-scope under the Carelon High Technology Radiology program for Commercial products. For medical necessity criteria, providers must refer to the Carelon Medical Benefits Management Clinical Guidelines for Advanced Imaging/Radiology.
- Commercial products: CPT and HCPCS codes in-scope under Carelon High Technology Radiology — follow Carelon medical necessity criteria.
Scope and medical necessity linkage (Medicare Advantage)
The following CPT and HCPCS codes are in-scope under the Carelon Advanced Imaging/Radiology Management Program for Medicare Advantage (HMO and PPO). For medical necessity criteria, providers must refer to Carelon Medical Benefits Management Clinical Guidelines for Advanced Imaging/Radiology.
- Medicare Advantage products: CPT and HCPCS codes in-scope under Carelon Advanced Imaging/Radiology Management Program — follow Carelon medical necessity criteria.
Prior authorization exceptions and radiotracer PA requirements
The duplex/vascular study codes listed in Blue Cross Blue Shield of Massachusetts Medical Policy #691 (Non‑Invasive Vascular Studies — Duplex Scans) do not require prior authorization through Carelon Medical Benefits Management when the policy criteria are met. Additionally, specified radiotracer HCPCS codes have prior authorization requirements as noted in policy history.
- Codes exempt from Carelon prior authorization when policy criteria are met: 93880, 93882, 93922, 93923, 93924, 93925, 93926, 93930, 93931, 93978, 93979 (see BCBSMA Medical Policy #691).
- Radiotracer prior authorization notes: A9596, A9601, A9602, A9800 were added in policy history and require prior authorization through AIM Specialty Health/Carelon as indicated by effective dates in Policy History.
Scope Definitions and Exceptions
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