88307

Level V - Surgical pathology, gross and microscopic examination

CPT code 88307 represents a Level V surgical pathology examination, which entails both the gross and microscopic evaluation of specific tissue specimens requiring comprehensive diagnostic scrutiny. This level of pathology is designated for complex specimens that demand significant effort, time, and specialized expertise to evaluate adequately. Typical specimens falling under this category include, but are not limited to, breast (mastectomy or lumpectomy with regional nodes), colon (segmental resection for tumor), kidney (partial or total nephrectomy), larynx (partial or total resection), liver (partial resection), lung (wedge resection), myocardium (biopsy), ovary with or without tube (neoplastic), prostate (radical), salivary gland, stomach (subtotal or total resection for neoplasm), testis (tumor), thyroid (total or lobe), and uterus (with or without tubes and ovaries, neoplastic). The process begins when the pathologist receives the specimen from the surgical suite. A meticulous gross examination is performed, documenting the size, weight, color, texture, and any visible abnormalities or lesions. Careful inking of margins is often required to assess complete surgical excision. Representative tissue sections are then mapped, dissected, and placed into cassettes for tissue processing. Following fixation, dehydration, clearing, and paraffin embedding, the tissue blocks are sectioned into ultra-thin slices using a microtome. These sections are mounted on glass slides and stained, typically with hematoxylin and eosin, to highlight cellular structures. The pathologist conducts a thorough microscopic examination to determine the diagnosis, including the identification of benign or malignant processes, tumor grade, depth of invasion, status of surgical margins, lymphovascular invasion, and the presence of any other pathologic conditions. The resulting comprehensive surgical pathology report provides critical information that directly guides the patient's subsequent clinical management, such as the need for adjuvant chemotherapy, radiation therapy, or further surgical intervention. This code is fundamental in oncology and complex surgical cases where precise pathological characterization is vital for patient care and therapeutic planning.

Clinical Indications

  • Evaluation of a breast lumpectomy or mastectomy specimen for neoplasm.
  • Assessment of a segmental colon resection removed for suspected or confirmed tumor.
  • Pathological examination of a radical prostatectomy specimen.
  • Evaluation of a total or lobar thyroidectomy specimen.
  • Examination of a neoplastic uterus, with or without tubes and ovaries.
  • Diagnostic assessment of a partial or total nephrectomy specimen.
  • Evaluation of a lung wedge resection for diagnostic or therapeutic purposes.
  • Analysis of a partial liver resection specimen.

Procedure Steps

  1. Specimen reception and accessioning, including rigorous patient identification and clinical history verification.
  2. Meticulous gross examination, including measurement, weighing, and detailed macroscopic description of the tissue and any identified lesions.
  3. Application of tissue marking dye to surgical margins to meticulously assess the adequacy of surgical resection.
  4. Dissection and selection of representative tissue sections, focusing on tumors, margins, and surrounding normal tissue, placing them into cassettes.
  5. Fixation of tissue cassettes in formalin, followed by dehydration, clearing, and paraffin embedding.
  6. Microtome sectioning of the paraffin-embedded blocks into ultra-thin slices and mounting them on glass slides.
  7. Staining the tissue slides, typically utilizing a routine hematoxylin and eosin stain to visualize cellular architecture.
  8. Comprehensive microscopic examination by the pathologist to evaluate cellular features, cytologic atypia, tissue invasion, and margin status.
  9. Formulation of a detailed surgical pathology report, integrating gross and microscopic findings to yield a final diagnosis and relevant prognostic factors.

Coding Guidelines

  • CPT 88307 applies specifically to specimens explicitly listed under the Level V category in the CPT manual. Do not use for specimens listed under Levels I-IV or VI.
  • If a specimen is not explicitly listed in the CPT manual, assign the code that most closely reflects the physician work and complexity involved.
  • Report 88307 for each separately identified specimen that requires individual gross and microscopic examination and results in a distinct diagnosis.
  • Modifiers such as 26 (Professional Component) or TC (Technical Component) must be used if only one portion of the comprehensive service is provided by the billing entity.
  • Do not bundle separate specimens into a single 88307 code; they should be reported with multiple units or distinct line items.
  • Additional codes, such as 88312, 88313, or 88342, may be reported separately for special stains or immunohistochemistry if they are medically necessary and documented in the report.

Associated ICD-10 Codes