Orthopedic Coding Alert

Tip: The cast is billable if you are not coding fracture care.

When school goes back into session, so does participation in outdoor sports — which means the likelihood of broken bones increases. If you want your cast and splint claims to sail through reimbursement, avoid the trap of coding within the global period.

Know These Two Cast Coding Times

Many patients keep the same cast throughout treatment, but that’s not always the case. If a patient needs a replacement cast because of decreased swelling, loosening of the cast, or a broken cast, don’t forget that you might be able to code the application.

Initial cast application is part of the fracture care global period, but there are two instances when you might be able to report additional casts:

Situation 1: Any replacement cast your physician applies during the global period is separately codeable. Some payers require modifier 58 (Staged or related procedure by the same physician or other qualified healthcare professional during the post-operative period) to indicate that the cast is part of the same treatment plan, but that guideline can vary. Medicare requires the modifier. Coders have successfully billed this to the private health plans without the modifier without a problem.

Example: A patient under your orthopedist’s care needs a replacement cast once the swelling in her arm goes down. You can report the replacement with the appropriate cast code (such as 29075, Application, cast; elbow to finger [short arm]), plus modifier 58.

Situation 2: Payers don’t consider a temporary cast to be part of the preoperative care, so you can code for the application. Report the appropriate choice from cast codes 29000-29590 (the range of cast application codes based on the type of cast and body part). The physician’s documentation should include the application procedure, the type of cast/splint applied, the type of material used, and the reason for application. For example, a thorough procedure note would be: “Due to the amount of swelling present I would prefer that we delay operative intervention. A well padded short leg fiberglass cast was applied to stabilize the fracture. She will follow up in 5 days for cast change, x-ray and reevaluation. Sooner if the cast becomes loose or uncomfortable.” You could also report an appropriate E/M code with modifier 25 (Significant, separately identifiable evaluation and management service by the same physician or other qualified health care professional on the same day of the procedure or other service) to distinguish the evaluation from the cast application.

Example: Depending on other details with the procedure documentation above, you might report 29425 (Application of short leg cast [below knee to toes]; walking or ambulatory type) for the temporary cast. Include an E/M code (such as 99211-99215, Office or other outpatient visit for the evaluation and management of an established patient ...) and modifier 25 to complete that part of your claim.

Clarify the “First Cast” Rule

When your physician provides fracture management, the fracture care global period includes the first cast he applies for the patient. Remember, your orthopedist doesn’t always apply the patient’s first cast, however.

Example: A patient is injured while on vacation and sees an out-of-town orthopedist, who applies a cast. The patient sees your physician when she returns home. Report the applicable E/M code from 99201-99205 (Office or other outpatient visit for the evaluation and management of a new patient ...) or 99211-99215 (Office or other outpatient visit for the evaluation and management of an established patient ...), depending on whether the patient is new or established with your physician.

The cast is billable if you are not coding fracture care. If you’re coding fracture care, the first cast is bundled in the code.

Remember that the initial cast application is included in all the surgical procedures, not just for fractures. For example, cast application at the same time as performing a joint or tendon/ligament injection is bundled into the “surgical” procedure.

Code for Supplies Every Time

Although cast application coding can vary, you have one simple rule to remember for cast and splint supplies: they are always separately billable, assuming your physician incurred the expense for supplies.

Look to HCPCS for all your cast supply codes. Make your selection based on the patient’s age, type of cast/splint, and the type of cast material.

A codes: Some workers’ compensation groups prefer A codes such as A4580 (Cast supplies [e.g., plaster]) or A4590 (Special casting material [e.g., fiberglass]). Most payers do not recognize this group of codes, however, so experts recommend verifying their use before choosing an A code for casts.

L codes: All L codes pertain to orthotic and prosthetic procedures and devices, including scoliosis equipment, orthopedic shoes, and prosthetic implants. Only turn to L codes (such as L2106, Ankle foot  orthotic [AFO], fracture  orthotic, tibial fracture cast  orthotic, thermoplastic type casting material, custom-fabricated) when you’re coding supplies for long-term support of a diseased or injured extremity, not your typical fracture care.

Q codes: Your best choices lie with codes Q4001-Q4048 that cover the gamut of cast supplies and application types. Each Q code fee includes the cast material, padding, and stockinette. Don’t forget about waterproof cast padding such as Procel/Gortex. Some health plans allow separate reimbursement for this material.

Here’s how: When reporting Q codes for your cast supplies, include Q4050 (Cast supplies, for unlisted types and materials of casts). Include a note in Box 19 of the supply and type of cast applied (such as, “waterproof cast padding for short leg cast”).

Also, include the supporting documentation of medical necessity to meet payer requirements. Diagnoses could range from 892.x (Open wound of foot except toe[s] alone) for an open foot wound to 756.83 (Ehlers-Danlos syndrome) for EDS or friable skin.