CPT 88329Laboratory

Path consltj drg surg

CPT code 88329 covers pathology consultation services performed during surgery, where a pathologist examines tissue samples while the patient is still on the operating table to help guide the surgeon's decisions in real-time.

Showing rates for

National Average

Base Medicare rate

$52.72

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

0.67

PE RVU (NF)

0.92

MP RVU

0.04

Total RVU

1.63

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

Loading bundling edits…

Billing tips

Bill 88329 per specimen/site consulted, not per tissue block or slide prepared - each distinct anatomic site or specimen requiring separate intraoperative consultation decision warrants separate billing
Impact: Can increase reimbursement by $52.72 per additional qualifying specimen when properly documented
Document the exact time of specimen receipt, time of pathologist interpretation, and time of communication to surgeon - timestamp documentation is critical for audit defense
Impact: Prevents denials worth $52.72 per case; reduces audit risk by 60-70% based on compliance data
Distinguish 88329 from 88331 (first tissue block) and 88332 (each additional block) - use 88329 only for the consultation service itself, not the frozen section technical work
Impact: Proper code selection prevents unbundling denials and ensures appropriate reimbursement; incorrect coding can trigger $200+ in overpayment recoveries
For facility billing, understand the $33.32 facility rate applies when performed in hospital inpatient or on-campus outpatient departments versus $52.72 non-facility rate
Impact: $19.40 difference per case; verify place of service coding to avoid improper payment
When multiple specimens from different sites are examined during one surgery, append modifier 59 to the second and subsequent 88329 codes with clear documentation of distinct specimens
Impact: Allows full payment of additional $52.72 per specimen rather than bundled denial
Always obtain and document direct verbal communication between pathologist and surgeon regarding findings - written report alone is insufficient for 88329

Live Field Datano reports yet

Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.

Working with CPT 88329?

Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.

Help build the field knowledge

MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.

Related actions

Frequently asked questions

What is the Medicare reimbursement rate for CPT 88329 in 2025?

The 2025 Medicare national average reimbursement for CPT 88329 is $52.72 for non-facility settings and $33.32 for facility settings. The code has a total RVU of 1.63 (Work RVU 0.67, Non-Facility PE RVU 0.92, Facility PE RVU 0.32, MP RVU 0.04) using the 2025 conversion factor of 32.3465.

How many times can you bill CPT 88329 during a single surgical procedure?

You can bill CPT 88329 multiple times during a single surgery if the pathologist performs separate intraoperative consultations on distinct specimens from different anatomic sites, each requiring independent diagnostic evaluation and communication to the surgeon. Each additional unit beyond the first should include modifier 59 and clear documentation of the separate specimen and distinct consultative decision.

What is the difference between CPT 88329 and 88331?

CPT 88329 is the pathology consultation service code representing the pathologist's professional interpretation and communication during surgery, while CPT 88331 represents the technical frozen section procedure for the first tissue block. Code 88329 covers the consultation itself; 88331 covers the laboratory work of preparing and processing frozen tissue sections. Both may be billed for the same encounter when appropriate.

Does CPT 88329 require modifier 26 for professional component billing?

CPT 88329 can be billed globally (without modifier), with modifier 26 for professional component only, or with modifier TC for technical component only, depending on your billing arrangement. Hospital-employed pathologists typically bill the global service, while independent pathologists in hospital settings often bill modifier 26 for their interpretation with the hospital billing TC separately.

What documentation is required to bill CPT 88329?

Required documentation includes timestamp of specimen receipt during surgery, time of pathologist interpretation, time and method of communication to the surgeon, specific diagnostic findings communicated, surgeon's name, how findings influenced surgical decisions, type of analysis performed, specimen identification, and pathologist's signature. The communication between pathologist and surgeon must be documented in real-time during the operative procedure.

Can CPT 88329 be billed for touch prep or cytology during surgery?

Yes, CPT 88329 can be billed for intraoperative consultations using touch preparations, cytologic preparations, or other rapid diagnostic techniques, not just frozen sections. The key requirement is that it represents an intraoperative pathology consultation that provides immediate diagnostic information to guide surgical decision-making, regardless of the specific technical method used.

What are common reasons for CPT 88329 claim denials?

Common denial reasons include lack of documented real-time communication between pathologist and surgeon, bundling with frozen section codes without proper distinction, insufficient medical necessity showing the consultation influenced surgical decisions, missing timestamps, and duplicate billing for multiple specimens without clear documentation of distinct consultative services. Proper documentation of each required element prevents most denials.