CPT code 31632: Lung biopsy, each additional lobe2026 Medicare rate & RVUs in Missouri
Reports transbronchial lung tissue sampling in an additional lobe during bronchoscopy, beyond the lobe covered by the primary biopsy code.
Medicare pays $64.22–$67.24 for 31632 in the office in Missouri, from Rest of Missouri to Metropolitan St. Louis, MO. Which amount applies depends on the service address.
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
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What 31632 covers
A pulmonologist, interventional pulmonologist, or thoracic surgeon may take transbronchial lung tissue samples through a bronchoscope to evaluate findings such as pulmonary nodules or diffuse lung disease. This add-on represents sampling in an additional lobe beyond the lobe reported with the primary transbronchial lung biopsy service. It is commonly performed in a hospital bronchoscopy suite or operating room.
Report 31632 with 31628 when the bronchoscopist biopsies lung tissue in one or more additional lobes during the same procedure. The operative report should identify the lobes sampled and describe transbronchial lung tissue biopsy; the additional code is based on the additional lobe, not the number of specimens or biopsy passes. CMS classifies it as an add-on: it must be billed with a primary procedure and is paid within that procedure’s global period.
This summary was written with AI assistance from CMS physician fee schedule data and checked against the CMS billing rules shown here. Rates on this page come directly from CMS files.
Where 31632 pays more and less in Missouri
The same RVUs, adjusted for each area’s costs. Open a locality for its calculation, history and nearby areas.
3 payment localities
$64.22 to $67.24
| Payment locality | Office | Facility |
|---|---|---|
| Metropolitan Kansas City, MO | $66.75 | $42.60 |
| Metropolitan St. Louis, MO | $67.24 | $42.76 |
| Rest of Missouri | $64.22 | $42.05 |
How the 31632 rate is calculated
Each of 31632’s three RVUs is multiplied by a geographic index (GPCI) for the payment locality, added up, and multiplied by the conversion factor. Drag the indexes or enter a ZIP to see what moves the rate.
How the rate is built · 31632
RVUs × geographic indexes × conversion factor
Work1.00
1.00 RVUs× 1.000 GPCI
Practice expense0.98
0.98 RVUs× 1.000 GPCI
Malpractice0.08
0.08 RVUs× 1.000 GPCI
Adjusted RVUs
2.0600
Conversion factor
$33.4009
Medicare rate
$68.81
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
Payment rules and modifiers for 31632
The CMS indicators that decide how 31632 is paid alongside other services.
CMS payment indicators · 31632
Lung biopsy, each additional lobe
| Rule | CMS value | What it means |
|---|---|---|
| Global period | ZZZ | Add-on code: falls within the primary procedure’s global period. |
| Multiple procedures | 0 | No multiple-procedure reduction. |
| Bilateral (modifier 50) | 0 | The 150% bilateral adjustment doesn’t apply. |
| Assistant at surgery (80/81/82/AS) | 1 | Not paid (statutory restriction). |
| Co-surgeons (62) | 0 | Not permitted. |
| Team surgery (66) | 0 | Not permitted. |
| Professional/technical | 0 | Physician service: no professional/technical split. |
31632 compared with similar codes
Compare codes · National
5 codes, side by side
How to choose
- 31628Lung biopsySingle lobe
- Use 31628 for the primary lobe sampled by transbronchial lung biopsy. Add 31632 for each additional lobe sampled during the procedure.
- 31625Bronchoscopy biopsyAirway tissue sampling
- 31625 describes bronchoscopic biopsy of airway tissue. 31632 is for transbronchial sampling of lung tissue in an additional lobe.
- 31633Bronchoscopic needle biopsyEach additional lobe
- 31633 is the additional-lobe add-on for transbronchial needle aspiration biopsy; 31632 is for transbronchial lung tissue biopsy.
- 31629Bronchoscopic biopsyNeedle aspiration biopsy
- 31629 reports transbronchial needle aspiration biopsy. Choose the code family matching needle aspiration rather than lung tissue biopsy.
31632 billing questions
Can 31632 be reported by itself?
No. It is an add-on code and must be reported with the primary transbronchial lung biopsy code, 31628.
Is 31632 reported for each extra specimen or biopsy pass?
No. It represents transbronchial lung biopsy in an additional lobe. Document the lobe sampled; specimen or pass count alone does not establish another unit.
How does 31632 differ from 31628?
31628 reports transbronchial lung biopsy in the primary lobe. Use 31632 for biopsy sampling in each additional lobe during that procedure.
When should 31625 be considered instead?
31625 concerns bronchoscopic biopsy of airway tissue, such as a bronchial lesion. 31632 applies to transbronchial sampling of lung tissue in an additional lobe.
What documentation supports reporting 31632?
The bronchoscopy report should state that transbronchial lung tissue was sampled and identify the additional lobe or lobes biopsied.
Where these rates come from
FeeBase calculates base physician payments from CMS work, practice-expense and malpractice RVUs, adjusted by each locality’s geographic indexes and the conversion factor. Services without a published rate are labeled, never given a made-up amount. Amounts are Medicare allowed amounts before claim adjustments: not a patient’s bill or a commercial rate.
CMS RVU26D · effective Oct 1, 2026 through the day before Jan 1, 2027
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