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CPT®
77310

CPT® Code 77310
Deleted

Code deleted, see 77306, 77307

Official Description

Teletherapy, isodose plan (whether hand or computer calculated); intermediate (3 or more treatment ports directed to a single area of interest)

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

The CPT® Code 77310 refers to the process of teletherapy isodose planning, which is a critical step in the administration of radiation therapy for cancer patients. This procedure involves the meticulous planning of the distribution of radiation doses to ensure that the maximum therapeutic effect is achieved while minimizing exposure to surrounding healthy tissues. The term "isodose" refers to lines that connect points receiving the same dose of radiation, and the planning can be performed either by hand or through computer calculations. In this specific code, the term "intermediate" indicates that the planning involves three or more treatment ports that are directed towards a single area of interest, which may include two separate treatment areas, the use of multiple blocks, or the application of special time dose constraints. This level of planning is essential for optimizing treatment efficacy and is a fundamental component of the overall radiation therapy process.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The procedure associated with CPT® Code 77310 is indicated for patients undergoing radiation therapy for cancer treatment. The specific indications include:

  • Cancer Treatment The primary indication for this procedure is the treatment of cancer, where precise radiation delivery is crucial for effective therapy.
  • Multiple Treatment Ports This procedure is indicated when three or more treatment ports are required to converge on a single area of interest, ensuring adequate dose distribution.
  • Complex Treatment Areas It is also indicated for cases involving two separate treatment areas or when multiple blocks are necessary to shape the radiation beam appropriately.
  • Special Time Dose Constraints The procedure is indicated when there are specific time dose constraints that must be adhered to for optimal treatment outcomes.

2. Procedure

The procedure for CPT® Code 77310 involves several critical steps to ensure effective isodose planning for radiation therapy. These steps include:

  • Step 1: Patient Assessment The process begins with a thorough assessment of the patient’s medical history, cancer type, and treatment goals. This assessment helps in determining the appropriate radiation therapy plan tailored to the individual patient's needs.
  • Step 2: Imaging Studies Next, imaging studies such as CT scans or MRIs are performed to accurately visualize the tumor and surrounding anatomy. These images are essential for planning the radiation treatment and identifying the precise location of the cancerous tissue.
  • Step 3: Isodose Distribution Planning The physician then utilizes the imaging data to create an isodose distribution plan. This involves calculating the radiation dose that will be delivered to the tumor while minimizing exposure to adjacent healthy tissues. The planning may be done manually or with the aid of computer software.
  • Step 4: Treatment Port Configuration During this step, the configuration of the treatment ports is established. This includes determining the angles and positions of the three or more ports that will direct radiation beams towards the tumor, ensuring optimal coverage and dose distribution.
  • Step 5: Review and Adjustment The planned isodose distribution is reviewed for accuracy and effectiveness. Adjustments may be made based on the specific requirements of the treatment, including any special time dose constraints that need to be considered.

3. Post-Procedure

After the completion of the isodose planning procedure, the physician will typically review the plan with the radiation therapy team to ensure that all aspects of the treatment are understood and agreed upon. The patient may then proceed to the actual radiation therapy sessions based on the established plan. It is essential to monitor the patient’s response to treatment and make any necessary adjustments to the plan as therapy progresses. Follow-up appointments will be scheduled to assess the effectiveness of the radiation therapy and to manage any potential side effects that may arise during the treatment course.
Short Descr TELETX ISODOSE PLAN INTERMED
Medium Descr TELETHERAPY ISODOSE PLAN INTERMEDIATE
Long Descr Teletherapy, isodose plan (whether hand or computer calculated); intermediate (3 or more treatment ports directed to a single area of interest)
Status Code Active Code
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 1 - Diagnostic Tests for Radiology Services
Multiple Procedures (51) 0 - No payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 9 - Concept does not apply.
Assistant Surgeon (80, 82) 0 - Payment restriction for assistants at surgery applies to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Ancillary Services
Type of Service (TOS) 6 - Therapeutic Radiology
Berenson-Eggers TOS (BETOS) P7A - Oncology - radiation therapy
MUE Not applicable/unspecified.
CCS Clinical Classification 211 - Therapeutic radiology
Date
Action
Notes
2015-01-01 Deleted Code deleted, see 77306, 77307
2009-01-01 Changed Code description changed
Pre-1990 Added Code added.
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Description
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