CPT code 49507 – Open inguinal hernia repair, incarcerated or strangulated

Key takeaways

CPT code 49507 is for open repair of an initial inguinal hernia that is incarcerated or strangulated, in patients aged 5 or older.

A reducible hernia moves the claim to 49505, so the operative note must state the hernia’s status in plain words.

Pair 49507 with an ICD-10 code showing obstruction or gangrene, such as K40.30 or K40.40, never K40.90.

Mesh is included in 49507, but resecting dead bowel from a strangulated hernia is reported separately, for example with 44120.

Laparoscopic repairs use 49650 or 49651 whatever the hernia status, and recurrent open repairs use 49520 or 49521.

CPT code 49507 covers open repair of a trapped inguinal hernia

CPT code 49507 reports an open repair of a first-time inguinal hernia that is incarcerated or strangulated, in a patient aged 5 or older. The official AMA descriptor reads: Repair initial inguinal hernia, age 5 years or older; incarcerated or strangulated.

In practice, three conditions must all apply before 49507 fits the case.

• Initial repair: The patient has had no earlier repair of a hernia on that side. A recurrent open repair moves to 49520 or 49521.
• Age 5 or older: Younger children have their own codes, 49491 through 49501, split by age and prematurity.
• Incarcerated or strangulated: The hernia contents are trapped and cannot be pushed back, or their blood supply is cut off. A reducible hernia takes 49505.

The code also assumes an open incision, since a laparoscopic repair uses a different code. Run the four checks below in order, and only one path ends at 49507.

What 49507 includes, and what you report on top

Bundling errors are easy to make on hernia claims, because the surgical package absorbs more than many coders expect. Use this table to decide what stays inside 49507.

Incarcerated vs strangulated: Both qualify for 49507. An incarcerated hernia is trapped but still has a blood supply. A strangulated hernia has lost its blood supply, which makes the repair urgent.

On the diagnosis side, ICD-10-CM treats both as a hernia “with obstruction.” Only documented gangrene moves the diagnosis into the “with gangrene” codes.

Reducibility decides between 49505 and 49507

49505 and 49507 share the same age rule, approach, and initial-repair requirement. The only difference is whether the hernia could be reduced, so the operative note carries the whole decision.

Worked example: A 46-year-old man arrives with a painful right groin bulge that will not reduce. At surgery, the surgeon finds trapped but healthy small bowel and repairs the defect with mesh.

The claim line is 49507-RT with K40.30, and no mesh code is added. If the bowel had been gangrenous and resected, the claim would add 44120 and switch the diagnosis to K40.40. If the note had described a reducible hernia, the same surgery would code to 49505 with K40.90.

Surgeon preference never decides the code. Billing 49507 when the note says “easily reduced” is upcoding, and auditors look for exactly that.

Laparoscopic and recurrent repairs move to other codes

49507 is an open, initial repair code only. Change either the approach or the history, and the claim moves to a different code.

The laparoscopic codes ignore hernia status. 49650 covers an initial repair whether the hernia was reducible or trapped, and 49651 covers any recurrent one.

Coders may not assume the approach from the surgeon’s habits. If the note says “open” or describes a groin incision, 49507 applies.

ICD-10 codes that support a 49507 claim

Payers check that the diagnosis supports a trapped hernia. A 49507 line paired with a “without obstruction or gangrene” code reads as a mismatch, and the claim often comes back denied.

The first digit after the decimal carries the story. A 3 (unilateral) or 0 (bilateral) means obstruction, 4 or 1 means gangrene, and 9 or 2 means neither. The final digit separates initial from recurrent.

Modifiers for CPT code 49507 depend on side and timing

Most 49507 claims need a side modifier, and some need a global-period modifier too. These are the ones you will use most.

Bilateral billing rule: 49507 carries a bilateral surgery indicator of 1 in the Medicare fee schedule. For Medicare, report one line with modifier 50 and one unit. Some commercial plans want two lines with RT and LT instead.

If one side is incarcerated and the other is reducible, modifier 50 does not fit. Report 49507 for one side and 49505 for the other, each with its side modifier.

Medicare pays 49507 under a 90-day global package

Medicare payment for 49507 depends on your locality and the year’s fee schedule. Instead of quoting a figure that changes every January, look it up in the CMS Physician Fee Schedule search tool.

Three parts make up the payment, and a fourth adjusts it.

• Work RVU: Reflects surgeon time and effort. 49507 carries more work RVUs than 49505.
• Practice expense RVU: Hernia repair usually happens in a hospital or surgery center, so the facility amount applies.
• Malpractice RVU: The smallest part, covering liability cost.
• Geographic adjustment: Each locality scales the three parts, so the same code pays more in high-cost areas.

The global period is 90 days. The fee covers the visit the day before or the day of surgery, the operation itself, and routine follow-up through day 90. For locality-adjusted figures, the FastRVU lookup tool imports the CMS data.

Prior authorization rarely holds up an emergency repair

Traditional Medicare does not require prior authorization for inguinal hernia repair. Medicare Advantage, Medicaid, and commercial plans set their own rules, so check the patient’s plan.

Many 49507 cases are emergencies, which changes the timing. A plan may waive prior approval but still ask for notice soon after an emergency admission. Eligibility verification at booking, or as soon as the patient is admitted, catches those rules early.

For planned repairs that do need approval, payers usually look for the following evidence.

• Symptoms such as pain, a bulge, or limits on daily activity
• Exam findings showing the hernia cannot be reduced
• Imaging or clinical notes that support the need for surgery
• A note on why watchful waiting is not safe

How a 49507 claim moves from operating room to payment

Every handoff in this chain is a chance for the hernia’s status to get lost. Here is the usual path, step by step.

1. Booking and coverage: The front desk confirms coverage and any notification rule, often on the day of an urgent admission.
2. Surgery and the operative note: The surgeon records the approach, the side, and the hernia’s status at repair.
3. Coding: The coder picks 49507 or 49505 from the note, adds the K40 code and the side modifier.
4. Charge entry and review: The claim is built, then checked for payer format and missing fields.
5. Submission and remittance: The clearinghouse sends the claim, and the remittance returns a payment or a denial reason.
6. Global period: Routine follow-up through day 90 is logged as 99024, a no-charge visit, where the payer tracks it.

The operative note has to prove six points

The operative report is the document auditors pull first on a 49507 claim. It should state each of these points in plain words.

• Approach: It says “open” or describes a groin incision. Laparoscopic wording rules out 49507.
• Site: It confirms an inguinal hernia. Femoral, umbilical, and ventral hernias use other codes.
• Age: The record shows the patient is 5 or older.
• Status: It says “incarcerated” or “strangulated.” The word “reducible” points to 49505.
• History: It confirms no earlier repair on that side. A recurrence points to 49521.
• Mesh and bowel findings: It notes any mesh and the condition of trapped bowel. Mesh is bundled, but a resection is billed separately.

A surgical superbill built around these six points means fewer coder queries back to the surgeon. Charge entry moves faster as a result.

Common denial reasons for CPT 49507 and the fix for each

49507 denials follow a handful of patterns. Good denial management tracks them by code, so you fix the cause once instead of claim by claim.

• Diagnosis mismatch (often CARC 11): 49507 went out with K40.90. Fix it by choosing a K40 code that shows obstruction or gangrene.
• Wrong code for the note: 49505 was billed although the note says incarcerated, or the reverse. Add a review step before charge entry.
• Missing records: The payer asks for the operative note and it is not signed yet. Hold surgical charges until it is.
• Bilateral format error: Modifier 50 went to a payer that wants RT and LT lines. Keep a payer-by-payer format list.
• Bundled items billed (often CARC 97): A mesh supply or a routine post-op visit was billed separately. Remove them from the claim.
• Missing authorization (often CARC 197): A plan that needed notice never got it. Record notification at admission.

Match each remittance code against a denial codes reference to see which fix applies.

Before you submit: A 49507 claim checklist

Run through this list before any 49507 claim leaves the practice. It takes a minute and prevents most of the denials above.

• The operative note is signed and says “incarcerated” or “strangulated.”
• The note confirms an open approach and an initial repair.
• The patient is 5 or older on the date of service.
• The diagnosis is K40.30, K40.40, K40.00, or K40.10, matching the note.
• RT, LT, or 50 matches the payer’s bilateral format.
• No mesh supply line sits on the professional claim.
• Any bowel resection is coded separately with its own diagnosis support.
• Authorization or notification details are on file where the plan needs them.

A clean claim is the cheapest claim you will ever send. Each item above removes one reason for a resubmission.

How Pabau keeps 49507 claims complete before they go out

In many surgical practices, coders retype codes from the operative note into a separate billing tool. Each retyped field is another chance for a K40.90 to slip onto a 49507 line.

In Pabau, the billing and practice software we build, the claim starts from the patient record instead. Our claims software for surgeons places the service’s CPT code on the charge line and seeds ICD-10 slots from the recorded diagnoses. Built-in CPT and ICD-10 lookups let the coder confirm K40.30 rather than type it from memory.

The claim will not send until required fields, such as an authorization number, are complete. For US practices, Pabau’s Claim.MD integration adds eligibility checks, electronic submission, status tracking, and remittance posting. The coding call stays with your coder, but fewer claims go out incomplete.

Send complete hernia repair claims the first time

Pabau builds claims from the patient record and blocks submission until required fields are filled. US practices also track claims and remittances through Claim.MD.

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Conclusion

49507 rewards practices that treat the operative note as the claim’s source. If the note names the hernia’s status, the code, the diagnosis, and the modifier follow from it.

So the most useful change is upstream. Ask surgeons to write “incarcerated,” “strangulated,” or “reducible” in every hernia note. Then make your coders check the K40 code against that word before charge entry.

The trade-off is a little extra time per case. In return, you avoid both denied 49507 claims and the upcoding risk of billing it on a reducible hernia. Book a demo to see how Pabau helps surgical practices send complete hernia repair claims.

Continue your research

Need to see how surgical claims reach payers? How a medical claims clearinghouse works follows a claim from charge entry to remittance.

Tracking denials across your surgical caseload? What is revenue cycle management explains how procedures turn into collected revenue.

Repairing the same hernia laparoscopically? CPT code 49650 covers the laparoscopic code for an initial inguinal repair.

New to the billing cycle? What is medical billing walks through each step from visit to payment.

Frequently asked questions