CPT code 31637: Bronchial stent, each additional bronchus2026 Medicare rate & RVUs in Washington, DC area
Report this add-on when bronchoscopy places a bronchial stent in an additional bronchus beyond the initial bronchus treated during the same procedure.
In Washington, DC area, Medicare pays $72.38 for 31637 in a facility. There’s no office rate.
Check a contract rate as a % of Medicare · 31637 nationwide
Medicare allowed amount for participating (non-QP) physicians, before deductible, coinsurance and claim adjustments. Not a patient’s bill or a hospital charge.
On this page 11 sections
What 31637 covers
This add-on describes bronchoscopic placement of a stent in an additional bronchus after the initial bronchus has been treated. Interventional pulmonologists and thoracic surgeons may use it when airway narrowing or obstruction, such as from a tumor or stenosis, involves more than one bronchus. Placement is performed with a rigid or flexible bronchoscope, commonly in a hospital setting.
Report 31637 for each additional bronchus treated, not for each extra stent placed in the same bronchus. The procedure record should identify the bronchus receiving the additional stent and support that placement occurred during the session. Pair it with the primary bronchial stent placement code, 31636, for the initial bronchus. CMS classifies 31637 as an add-on that is billed only with a primary procedure, with payment 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.
How Washington, DC area compares for 31637
Across 109 of 109 payment localities, the facility rate for 31637 runs from $63.20 in Arkansas to $91.30 in Alaska. Washington, DC area pays $72.38. The RVUs are the same everywhere; the geographic indexes change the dollars.
- Washington, DC area · this page$72.38
- Los Angeles, CA · California$69.52−$2.86
- Miami, FL · Florida$75.23+$2.85
- Chicago, IL · Illinois$74.04+$1.66
- Manhattan, NY · New York$75.10+$2.72
- Alaska · Alaska$91.30+$18.92
- Alabama · Alabama$63.63−$8.75
Other areas in District of Columbia first, then benchmark localities. Bars start at $0.
Every other payment area
| Payment locality | Office | Facility |
|---|---|---|
| ArkansasArkansas | — | $63.20 |
| ArizonaArizona | — | $66.08 |
| Bakersfield, CACalifornia | — | $67.18 |
| Chico, CACalifornia | — | $66.71 |
| El Centro, CACalifornia | — | $66.74 |
| Fresno, CACalifornia | — | $66.71 |
| Hanford, CACalifornia | — | $66.71 |
| Madera, CACalifornia | — | $66.71 |
| Merced, CACalifornia | — | $66.71 |
| Modesto, CACalifornia | — | $66.71 |
| Napa, CACalifornia | — | $71.31 |
| Oxnard, CACalifornia | — | $68.63 |
| Redding, CACalifornia | — | $66.71 |
| Rest of CaliforniaCalifornia | — | $66.71 |
| Riverside, CACalifornia | — | $68.35 |
| Sacramento, CACalifornia | — | $68.41 |
| Salinas, CACalifornia | — | $68.11 |
| San Diego, CACalifornia | — | $68.48 |
| Marin County, CACalifornia | — | $73.69 |
| San Francisco, CACalifornia | — | $73.52 |
| San Benito County, CACalifornia | — | $75.19 |
| Santa Clara County, CACalifornia | — | $74.50 |
| San Luis Obispo, CACalifornia | — | $67.17 |
| Santa Cruz, CACalifornia | — | $68.19 |
| Santa Maria, CACalifornia | — | $68.03 |
| Santa Rosa, CACalifornia | — | $68.79 |
| Stockton, CACalifornia | — | $66.71 |
| Vallejo, CACalifornia | — | $71.06 |
| Visalia, CACalifornia | — | $66.71 |
| Yuba City, CACalifornia | — | $66.71 |
| ColoradoColorado | — | $67.34 |
| ConnecticutConnecticut | — | $70.04 |
| DelawareDelaware | — | $66.76 |
| Fort Lauderdale, FLFlorida | — | $71.32 |
| Rest of FloridaFlorida | — | $69.19 |
| Atlanta, GAGeorgia | — | $68.47 |
| Rest of GeorgiaGeorgia | — | $66.94 |
| Hawaii, Guam, HIHawaii | — | $66.49 |
| IowaIowa | — | $63.21 |
| IdahoIdaho | — | $63.64 |
| East St. Louis, ILIllinois | — | $71.36 |
| Rest of IllinoisIllinois | — | $69.03 |
| Suburban Chicago, ILIllinois | — | $71.65 |
| IndianaIndiana | — | $63.78 |
| KansasKansas | — | $63.62 |
| KentuckyKentucky | — | $65.52 |
| New Orleans, LALouisiana | — | $67.19 |
| Rest of LouisianaLouisiana | — | $65.70 |
| Metropolitan Boston, MAMassachusetts | — | $70.77 |
| Rest of MassachusettsMassachusetts | — | $67.51 |
| Baltimore area, MDMaryland | — | $69.93 |
| Rest of MarylandMaryland | — | $67.37 |
| Rest of MaineMaine | — | $64.39 |
| Southern Maine, MEMaine | — | $65.19 |
| Detroit, MIMichigan | — | $70.20 |
| Rest of MichiganMichigan | — | $66.85 |
| MinnesotaMinnesota | — | $63.92 |
| Metropolitan Kansas City, MOMissouri | — | $66.37 |
| Metropolitan St. Louis, MOMissouri | — | $66.63 |
| Rest of MissouriMissouri | — | $65.53 |
| MississippiMississippi | — | $64.34 |
| MontanaMontana | — | $67.13 |
| North CarolinaNorth Carolina | — | $64.61 |
| North DakotaNorth Dakota | — | $64.16 |
| NebraskaNebraska | — | $63.20 |
| New HampshireNew Hampshire | — | $66.95 |
| Northern New JerseyNew Jersey | — | $72.43 |
| Rest of New JerseyNew Jersey | — | $70.66 |
| New MexicoNew Mexico | — | $67.26 |
| NevadaNevada | — | $66.31 |
| NYC suburbs and Long Island, NYNew York | — | $76.74 |
| Poughkeepsie and northern NYC suburbs, NYNew York | — | $71.52 |
| Queens, NYNew York | — | $74.59 |
| Rest of New YorkNew York | — | $65.11 |
| OhioOhio | — | $66.25 |
| OklahomaOklahoma | — | $64.87 |
| Portland, OROregon | — | $67.86 |
| Rest of OregonOregon | — | $65.61 |
| Metropolitan Philadelphia, PAPennsylvania | — | $69.47 |
| Rest of PennsylvaniaPennsylvania | — | $65.98 |
| Puerto RicoPuerto Rico | — | $67.18 |
| Rhode IslandRhode Island | — | $67.92 |
| South CarolinaSouth Carolina | — | $65.57 |
| South DakotaSouth Dakota | — | $63.81 |
| TennesseeTennessee | — | $63.84 |
| Austin, TXTexas | — | $67.29 |
| Beaumont, TXTexas | — | $65.82 |
| Brazoria, TXTexas | — | $66.35 |
| Dallas, TXTexas | — | $66.84 |
| Fort Worth, TXTexas | — | $66.80 |
| Galveston, TXTexas | — | $66.61 |
| Houston, TXTexas | — | $69.36 |
| Rest of TexasTexas | — | $66.10 |
| UtahUtah | — | $65.98 |
| VirginiaVirginia | — | $65.48 |
| Virgin Islands, VIUnited States Virgin Islands | — | $67.18 |
| VermontVermont | — | $64.55 |
| Rest of WashingtonWashington | — | $67.17 |
| King County, WAWashington | — | $71.22 |
| WisconsinWisconsin | — | $63.22 |
| West VirginiaWest Virginia | — | $67.90 |
| WyomingWyoming | — | $65.83 |
31637 rates by state
Office rate range in each state. Select a state to see its payment localities.
Explore a state
Local rates. Clear comparisons.
Hover or focus a tile to see its rate range. Select it to open the state’s fee schedule.
View every state and territory as a table
| State / territory | Office rate range | Localities |
|---|---|---|
| AK | No published base rate | 1 |
| AL | No published base rate | 1 |
| AR | No published base rate | 1 |
| AZ | No published base rate | 1 |
| CA | No published base rate | 29 |
| CO | No published base rate | 1 |
| CT | No published base rate | 1 |
| DC | No published base rate | 1 |
| DE | No published base rate | 1 |
| FL | No published base rate | 3 |
| GA | No published base rate | 2 |
| GU | No published base rate | 1 |
| HI | No published base rate | 1 |
| IA | No published base rate | 1 |
| ID | No published base rate | 1 |
| IL | No published base rate | 4 |
| IN | No published base rate | 1 |
| KS | No published base rate | 1 |
| KY | No published base rate | 1 |
| LA | No published base rate | 2 |
| MA | No published base rate | 2 |
| MD | No published base rate | 3 |
| ME | No published base rate | 2 |
| MI | No published base rate | 2 |
| MN | No published base rate | 1 |
| MO | No published base rate | 3 |
| MS | No published base rate | 1 |
| MT | No published base rate | 1 |
| NC | No published base rate | 1 |
| ND | No published base rate | 1 |
| NE | No published base rate | 1 |
| NH | No published base rate | 1 |
| NJ | No published base rate | 2 |
| NM | No published base rate | 1 |
| NV | No published base rate | 1 |
| NY | No published base rate | 5 |
| OH | No published base rate | 1 |
| OK | No published base rate | 1 |
| OR | No published base rate | 2 |
| PA | No published base rate | 2 |
| PR | No published base rate | 1 |
| RI | No published base rate | 1 |
| SC | No published base rate | 1 |
| SD | No published base rate | 1 |
| TN | No published base rate | 1 |
| TX | No published base rate | 8 |
| UT | No published base rate | 1 |
| VA | No published base rate | 2 |
| VI | No published base rate | 1 |
| VT | No published base rate | 1 |
| WA | No published base rate | 2 |
| WI | No published base rate | 1 |
| WV | No published base rate | 1 |
| WY | No published base rate | 1 |
How the 31637 rate is calculated
Each of 31637’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 · 31637
RVUs × geographic indexes × conversion factor
Work1.54
1.54 RVUs× 1.000 GPCI
Practice expense0.32
0.32 RVUs× 1.000 GPCI
Malpractice0.15
0.15 RVUs× 1.000 GPCI
Adjusted RVUs
2.0100
Conversion factor
$33.4009
Medicare rate
$67.14
Every GPCI starts at 1.000, the national rate. Enter a ZIP or drag a slider.
The exact Washington, DC area inputs and CMS source lines
PPRRVU2026_Oct_nonQPP.csv
3,646
- Code
- 31637
- Physician work
- 1.54
- Practice expense
- 0.32
- Malpractice
- 0.15
GPCI2026.csv
39
- Locality
- Washington, DC area
- Physician work
- 1.054
- Practice expense
- 1.178
- Malpractice
- 1.113
| Component | RVU | Locality factor | Adjusted |
|---|---|---|---|
| Physician work | 1.54 | × 1.054 | 1.6232 |
| Practice expense | 0.32 | × 1.178 | 0.3770 |
| Malpractice | 0.15 | × 1.113 | 0.1669 |
| Total RVUs | 2.1671 | ||
| Conversion factor | × 33.4009 | ||
Facility rate, Washington, DC area$72.38
Facility: (1.54 × 1.054 + 0.32 × 1.178 + 0.15 × 1.113) × $33.4009 = $72.38
Payment rules and modifiers for 31637
The CMS indicators that decide how 31637 is paid alongside other services.
CMS payment indicators · 31637
Bronchial stent, each additional bronchus
| 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. |
How 31637 has changed in Washington, DC area
31637 · Office / nonfacility
Rate unavailable
Effective 2026-10-01
A rate is unavailable in one of these releases, so a change cannot be calculated.
One bar per available release, ordered by effective date. Missing rates remain gaps. These comparisons hold the code, setting and locality identifiers constant; they do not isolate which policy or input caused a change.
What changed, release by release
| Effective from | Office | Facility | CMS release |
|---|---|---|---|
| 2026-10-01 | Not available in this setting | $72.38 | RVU26D |
| 2026-07-01 | Not available in this setting | $72.38 | RVU26C |
| 2026-04-01 | Not available in this setting | $72.38 | RVU26B |
| 2026-01-01 | Not available in this setting | $72.38 | RVU26A |
| 2025-10-01 | Not available in this setting | $78.96 | RVU25D |
| 2025-07-01 | Not available in this setting | $78.96 | RVU25C |
| 2025-04-01 | Not available in this setting | $78.96 | RVU25B |
| 2025-01-01 | Not available in this setting | $78.96 | RVU25A |
| 2024-10-01 | Not available in this setting | $80.87 | RVU24D |
| 2024-07-01 | Not available in this setting | $80.87 | RVU24C |
| 2024-04-01 | Not available in this setting | $80.87 | RVU24B |
| 2024-03-09 | Not available in this setting | $80.87 | RVU24AR |
| 2024-01-01 | Not available in this setting | $79.55 | RVU24A |
| 2023-10-01 | Not available in this setting | $84.20 | RVU23D |
| 2023-07-01 | Not available in this setting | $84.20 | RVU23C |
| 2023-04-01 | Not available in this setting | $84.20 | RVU23B |
| 2023-01-01 | Not available in this setting | $84.20 | RVU23A |
| 2022-10-01 | Not available in this setting | $86.57 | RVU22D |
| 2022-07-01 | Not available in this setting | $86.57 | RVU22C |
| 2022-04-01 | Not available in this setting | $86.57 | RVU22B |
| 2022-01-01 | Not available in this setting | $86.57 | RVU22A |
| 2021-10-01 | Not available in this setting | $87.31 | RVU21D |
| 2021-07-01 | Not available in this setting | $87.31 | RVU21C |
| 2021-04-01 | Not available in this setting | $87.31 | RVU21B |
| 2021-01-01 | Not available in this setting | $87.31 | RVU21A |
| 2020-10-01 | Not available in this setting | $88.28 | RVU20D |
| 2020-07-01 | Not available in this setting | $88.28 | RVU20C |
| 2020-04-01 | Not available in this setting | $88.28 | RVU20B |
| 2020-01-01 | Not available in this setting | $88.28 | RVU20A |
| 2019-10-01 | Not available in this setting | $87.60 | RVU19D |
| 2019-07-01 | Not available in this setting | $87.60 | RVU19C |
| 2019-04-01 | Not available in this setting | $87.60 | RVU19B |
| 2019-01-01 | Not available in this setting | $87.60 | RVU19A |
| 2018-10-01 | Not available in this setting | $83.97 | RVU18D |
| 2018-07-01 | Not available in this setting | $83.97 | RVU18C |
| 2018-04-01 | Not available in this setting | $83.97 | RVU18B |
| 2018-01-01 | Not available in this setting | $83.97 | RVU18AR1 |
| 2017-10-01 | Not available in this setting | $83.93 | RVU17D |
| 2017-07-01 | Not available in this setting | $83.93 | RVU17C |
| 2017-04-01 | Not available in this setting | $83.93 | RVU17B |
| 2017-01-01 | Not available in this setting | $83.93 | RVU17A |
| 2016-10-01 | Not available in this setting | $83.94 | RVU16D |
| 2016-07-01 | Not available in this setting | $83.94 | RVU16C |
| 2016-04-01 | Not available in this setting | $83.94 | RVU16B |
| 2016-01-01 | Not available in this setting | $83.94 | RVU16A |
| 2015-10-01 | Not available in this setting | $84.24 | RVU15D |
| 2015-07-01 | Not available in this setting | $84.24 | RVU15C |
| 2015-04-01 | Not available in this setting | $83.82 | RVU15B |
| 2015-01-01 | Not available in this setting | $83.82 | RVU15A |
| 2014-10-01 | Not available in this setting | $83.12 | RVU14D |
| 2014-07-01 | Not available in this setting | $83.12 | RVU14C |
| 2014-04-01 | Not available in this setting | $83.12 | RVU14B |
| 2014-01-01 | Not available in this setting | $83.12 | RVU14A |
| 2013-10-01 | Not available in this setting | $81.00 | RVU13D |
| 2013-07-01 | Not available in this setting | $81.00 | RVU13C |
| 2013-04-01 | Not available in this setting | $81.00 | RVU13B |
| 2013-01-01 | Not available in this setting | $81.00 | RVU13AR |
Where the Washington, DC area rate applies
Washington, DC area is a Medicare payment area, not a city. Our Census mapping connects it to 1 cities and communities in District of Columbia. Some span more than one payment area; confirm with the service ZIP.
- Washington
31637 billing questions
When should 31637 be reported instead of 31636?
Use 31636 for the initial bronchus receiving a bronchial stent. Report 31637 for each additional bronchus treated during the procedure.
Does each additional stent require a unit of 31637?
No. The add-on is based on each additional bronchus, not the number of stents placed in the same bronchus.
Can 31637 be billed without 31636?
No. CMS identifies 31637 as an add-on that must be billed with a primary procedure; 31636 is the primary code for initial bronchial stent placement.
What documentation supports reporting an additional unit?
Document the bronchoscopic stent placement and identify each additional bronchus treated beyond the initial bronchus.
Can a modifier make 31637 independently reportable?
No. A modifier does not replace the required primary procedure pairing.
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
Show the CMS file lines behind this rate
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