Unlisted code for an application of casting or strapping that no listed cast, splint, or strapping code describes.
- Medicare
- $0.00
- Work RVU
- 0
- Global, days
- Region
- General
Documentation requirements
What must appear in the operative or office note to support the claim.
Source · Editorial brief grounded in 2 cited references ↓
- Description of the cast, splint, or strapping and body area
- Why no listed 29000-series code applies
- Whether a fracture care code was billed the same day
- Materials used and time to apply
- Comparison code with similar time and materials
Applicable modifiers
Modifiers commonly billed with this code.
Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual
What this code covers
Source · Editorial summary grounded in 2 cited references ↓
29799 is the unlisted code for casting and strapping. The 29000 range already has codes for most casts, splints, and strapping by body area and type, so 29799 is rare. It fits unusual applications, such as a custom combination device or a body region with no listed code.
The bigger issue is when a cast or splint is billable at all. If the provider is treating a fracture with a fracture care code, the initial cast or splint is included in that code. Report a separate cast application only for a replacement cast later in the global, or when no restorative treatment was given (for example, a temporary splint before referral). That rule applies to listed codes and to 29799.
Supplies are a separate question. Cast and splint materials are reported with HCPCS Q codes, and whether they pay depends on the payer and the place of service. Medicare has no fee for 29799 and a YYY global. Send a description of the device, materials, and time.
RVU & reimbursement
Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.
Source · CMS Physician Fee Schedule, RVU26A · January 2026
| Work RVU | 0 |
| Practice expense RVU | 0 |
| Malpractice RVU | 0 |
| Total RVU | 0 |
| Medicare national rate | $0.00 |
| Global period | days |
Payment by site of service
Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.
Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026
| Setting | Medicare rate (national) |
|---|---|
Office (PFS non-facility) Procedure performed in physician's office | $0.00 |
HOPD (APC 5101) Hospital outpatient department | $166.02 |
Common denial reasons
The recurring reasons claims for CPT 29799 get rejected.
Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓
- Initial cast billed with a fracture care code that already includes it
- A listed cast, splint, or strapping code fits
- Supply Q codes billed for a cast applied in a facility setting
- No description of the device
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 2 cited references ↓
01When is CPT 29799 used?
02Can I bill a cast with a fracture care code?
03Are cast supplies paid separately?
Sources & references
Editorial content was developed using the following public sources.
- 01CMS Physician Fee Schedule 2026
- 02cms.govhttps://www.cms.gov/regulations-and-guidance/guidance/manuals/downloads/clm104c12.pdf
Mira Scribe
Mira Scribe notes the device type, body area, and whether fracture treatment was given, which tells the coder if a separate cast application is billable.
See how Mira captures CPT 29799 documentation