How can orthopedic practices maximize reimbursement?

How can orthopedic practices maximize reimbursement?

By charging the right amount on bilateral and multiple-procedure lines, documenting the unrelated work done inside a global period, and keeping every claim inside the filing limit. Orthopedic revenue is lost less to coding disputes than to lines that were paid correctly but at less than the rules allow.

This post covers the places where an orthopedic claim leaves money on the table and what to change in each. The rules below are Medicare's, so confirm any commercial payer's version in its own manual. For the global period contents, the fracture and casting rules and the implant and DME rules, use the orthopedic billing page.

• The charge on a bilateral line is too low.
• Multiple procedures are listed in the wrong way.
• Unrelated visits in the global period are never billed.
• Return trips and staged procedures go out without the right modifier.
• Unusual-service claims go out without the support.
• In-house therapy runs past the KX threshold.

Is the charge on a bilateral line costing you money?

Often, because Medicare pays the lower of the total charge or 150% of the fee schedule amount. The CMS fee schedule file defines the rule for bilateral indicator 1: if the code is billed with modifier 50 or reported twice on the same day, payment is based on the lower of the total actual charge for both sides and 150% of the fee schedule amount for a single code.

The Medicare Claims Processing Manual, chapter 12, section 40.7, tells filers to report such a procedure as a single line with modifier 50, which differs from CPT. A code whose descriptor already says bilateral, such as 27395, is reported without 50. Check the code's indicator first: the file gives a bilateral indicator of 1 for 27447, so 50 applies to total knee replacement, and 2 for 27395, so it does not.

The practice that enters the one-side charge is leaving $500 behind on every case. A charge master built for one-side procedures needs a bilateral rule, and a modifier 50 check in claim review catches the rest.

Are same-day procedures listed so Medicare can pay them correctly?

List the more major procedure first without modifier 51, and report each additional procedure with 51. Chapter 12, section 40.6, says the contractor ranks the procedures by fee schedule amount, so the biller's order does not set the payment. Contractors identify multiple surgeries by modifier 51 or by more than one separately payable surgery billed by the same physician on the same day.

For multiple procedure indicator 2, which covers most orthopedic surgery, the manual pays 100% of the fee schedule amount for the highest valued procedure and 50% for the second through the fifth, then suspends the sixth and later for review. The bilateral adjustment applies before the multiple procedure rules.

The lower-of-charge rule applies here too: payment is the lower of the actual charge and the reduced amount. A charge set below the reduced amount caps the payment.

Which visits and procedures in the global period are billable?

Unrelated ones, with the right modifier and a note that shows why. Chapter 12, section 40.4, says contractors deny visits in the postoperative period that carry no 24, 25, 57 or FT, and deny 24 or FT visits that lack sufficient documentation.

The manual says 24 is for services absolutely unrelated to the surgery and not for the surgeon's medical management after it. Modifier 22 applies only to codes with a global period of 0, 10 or 90 days. The modifier 24, modifier 78 and modifier 79 pages explain each, and the global surgery periods page explains the day counts.

What about in-house therapy and injections?

Therapy has a dollar threshold. For calendar year 2026, CMS transmittal R13437CP sets the KX modifier threshold at $2,480 for physical therapy and speech-language pathology combined and $2,480 for occupational therapy. Claims above those amounts without KX are denied. The KX modifier page has the attestation the modifier makes.

Modifier 25 reports a significant, separately identifiable visit on the day of a procedure (chapter 12, section 40.2). Section 40.4 says visits billed without 24, 25, 57 or FT are denied. See the modifier 25 page and the NCCI edits page.

How long do you have to bill, and how do you track misses?

Medicare requires a claim within one calendar year of the date of service under 42 CFR 424.44. Orthopedic cases spread over weeks, so track the date of surgery and the date the last global service was billed.

The timely filing limits page lists the other payers. A monthly report of surgeries with no claim after 30 days catches the cases that would otherwise age out.

What should a monthly orthopedic revenue review look at?

1. Bilateral cases: was the charge for both sides?
2. Multiple procedures: did the payment follow the expected 100% and 50% pattern?
3. Global period visits: any unrelated visit paid as zero or never sent?
4. Denials with CARC 97 or 4: modifier or documentation problem?
5. Therapy accounts near the threshold: KX applied where justified?

The cardiology billing post runs the same style of check on a different specialty.

How Nucleus Align handles it

Our medical billing team codes each case from the operative note and applies the global period and modifier rules before the claim leaves, with multiple claim scrubbing rules and claims sent within 24 hours of charge entry. Book a call and we will review your last quarter of surgical remittances, or return to the blog.