Summary & Overview
CPT 78199: Hematopoietic and Lymphatic Diagnostic Nuclear Medicine
Headline: CPT code 78199 covers unlisted hematopoietic and lymphatic nuclear medicine diagnostic procedures
Lead: CPT code 78199 is the unlisted code for diagnostic nuclear medicine procedures of the hematopoietic, reticuloendothelial, or lymphatic systems when no specific CPT code exists. It enables reporting of specialized imaging studies that are clinically important for staging, diagnosis, or monitoring of hematologic and lymphatic conditions.
Why it matters: Use of 78199 matters nationally because it provides a billing pathway for uncommon or evolving nuclear medicine techniques that lack discrete CPT descriptors. This affects coverage determinations, claim processing, and comparative utilization reporting across major payers. When used, supporting documentation and clear procedure descriptions are typically required for adjudication.
Payers covered: The analysis addresses coverage and payment considerations relevant to Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare.
What readers will learn: The publication offers benchmarks and clinical context for 78199, outlines common documentation needs and payer considerations, and summarizes how the code is applied in hospital outpatient departments and freestanding imaging centers. It highlights national policy implications for unlisted nuclear medicine reporting and identifies where input data is not available.
Data note: Data not available in the input for associated taxonomies, ICD-10 diagnoses, related codes, and service-line specifics.
Billing Code Overview
CPT code 78199 is an unlisted diagnostic nuclear medicine procedure used to report hematopoietic, reticuloendothelial, or lymphatic imaging studies that do not have a specific CPT code. The code captures specialized or uncommon nuclear medicine diagnostic procedures focused on the hematopoietic and lymphatic systems.
Service type: Diagnostic nuclear medicine procedure (hematopoietic/reticuloendothelial/lymphatic imaging)
Typical site of service: Hospital outpatient departments or freestanding imaging centers where nuclear medicine studies are performed
Data not available in the input.
Clinical & Coding Specifications
Clinical Context
A 62-year-old male with a history of non-Hodgkin lymphoma and unexplained persistent cytopenias is referred for a specialized hematopoietic/reticuloendothelial nuclear medicine study to evaluate marrow distribution and functional activity. The nuclear medicine team schedules the patient for a diagnostic procedure using a radiolabeled tracer targeted to the bone marrow or reticuloendothelial system to identify focal marrow involvement or extramedullary hematopoiesis.
The clinical workflow includes pre-procedure review of indications and anticoagulation status, IV access placement, administration of the appropriate radiopharmaceutical, imaging acquisition at specified time points (planar and/or SPECT), image processing and interpretation by a nuclear medicine physician, and generation of a formal report documenting findings and correlation with hematology-oncology records. The procedure is typically performed in an outpatient nuclear medicine or hospital radiology department with post-procedure observation as indicated.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the interpreting physician’s professional component separate from the technical component. |
TC |