CPT code 19370 – Revision of peri-implant capsule

Key takeaways

CPT code 19370 covers revision of the peri-implant capsule in one breast, including capsulotomy, capsulorrhaphy, and/or partial capsulectomy. Complete capsulectomy is CPT 19371.

Payers classify 19370 as cosmetic or reconstructive based on the clinical indication. Grade III or IV capsular contracture and post-mastectomy implant complications typically support reconstructive coverage.

CPT 19371 is not reported with 19370, 19328 or 19330 in the same breast, because complete capsulectomy already includes removal of all intracapsular contents.

Pabau’s claims management software connects to the Claim.MD clearinghouse, so eligibility checks and ERA remittances sit alongside the claim before it reaches the payer.

CPT code 19370: Official description and procedure overview

CPT code 19370 is defined by the American Medical Association (AMA) as: Revision of peri-implant capsule, breast, including capsulotomy, capsulorrhaphy, and/or partial capsulectomy. This wording took effect in the 2021 CPT code set and replaced the older “open periprosthetic capsulotomy” descriptor.

The code covers three kinds of work on the fibrous capsule around a breast implant. The surgeon may incise it (capsulotomy), tighten or repair it (capsulorrhaphy), or remove part of it (partial capsulectomy).

What the procedure involves: The surgeon opens the breast to reach the capsule around the implant. Depending on the problem, the capsule is incised to release contracture, sutured to tighten or reshape the pocket, or partly excised.

The implant may stay in place, be removed and put back to give access to the capsule, or be exchanged for a new one. Each scenario changes what else is reported. A new implant adds 19342, while putting the same implant back never adds 19328.

What CPT 19370 covers and what it excludes

The code covers capsulotomy, capsulorrhaphy and partial capsulectomy performed in the same breast at the same session. It does not cover complete removal of the capsule, and it has specific rules for implant removal and replacement. The decision path below puts those rules in the order a coder meets them.

• Included in 19370: Incision of the peri-implant capsule, capsulorrhaphy, partial capsulectomy, and standard closure.
• Implant removed only for access: Do not add CPT 19328 when the same implant is removed and put back to reach the capsule. That removal is part of the 19370 work.
• Code separately: Insertion of a new replacement implant (CPT 19342). Biologic mesh or acellular dermal matrix placement (CPT 15777).
• Not reported with 19370 in the same breast: CPT 19371, which is complete capsulectomy including removal of all intracapsular contents.
• Reconstructed breasts: CPT 19380 already describes significant capsular revision combined with soft tissue excision in implant-based reconstruction. Choose one code for that work rather than stacking both.

CPT 19370 vs. 19371 vs. 19380: Choosing the correct code

The codes most often confused with CPT code 19370 differ on two points. The first is how much capsule tissue is removed. The second is whether the breast was previously reconstructed.H

The operative report is the deciding document. If it describes incision, tightening or partial excision of the capsule, 19370 is correct. If the whole capsule was removed with all intracapsular contents, 19371 applies instead. If the patient previously had mastectomy reconstruction, check whether 19380 is the more accurate descriptor before defaulting to 19370

ICD-10 diagnosis codes that support medical necessity for CPT 19370

Pairing CPT code 19370 with the correct ICD-10-CM diagnosis code is what separates a reconstructive claim from a cosmetic one in payer adjudication systems. The T85 category (complications of internal prosthetic devices) and Z98.82 (breast implant status) are the codes most commonly accepted as medical necessity support.

Episode-of-care suffix alert: All T85 codes require a 7th character. Use A (initial encounter) while the condition is under active treatment, including the surgery itself. Use D (subsequent encounter) for follow-up during healing, and S (sequela) for late effects. Submitting T85.44x without the 7th character makes the code invalid and triggers an automatic denial.

Cosmetic vs. reconstructive: How payer classification affects coverage

Whether CPT code 19370 is covered by insurance hinges on whether the procedure is classified as reconstructive (medically necessary) or cosmetic (patient-pay). Payers follow the Women’s Health and Cancer Rights Act (WHCRA) of 1998 for post-mastectomy cases, and apply medical necessity criteria for other indications.

• Reconstructive indicators (typically covered): Baker Grade III or IV capsular contracture causing pain, functional impairment, or significant asymmetry. Capsule revision after implant-based reconstruction following mastectomy. Treatment of a ruptured or extruded implant.
• Cosmetic indicators (typically not covered): Baker Grade I or II contracture without functional symptoms. A patient-elective pocket change for size preference. Prophylactic capsule revision in a patient with no symptoms.
• Documentation that supports reconstructive classification: The Baker grade in the pre-op note and any history of mastectomy or prior reconstruction. Imaging (ultrasound or MRI) confirming the implant complication, plus physician attestation of medical necessity.
• Prior authorization: Most commercial payers require pre-authorization for 19370 when billing under reconstructive indications. Obtain auth before scheduling and retain the reference number in the claim file.

Medicare generally does not cover breast implant procedures performed for cosmetic reasons. Medicare covers reconstruction after cancer-related mastectomy under its own coverage rules. WHCRA mandates the same for group health plans and insurers. Verify the applicable Local Coverage Determination (LCD) with the Medicare Administrative Contractor (MAC) serving the practice’s jurisdiction, as coverage criteria vary by region.

Medicare and major payer coverage rules for CPT 19370

Medicare covers CPT code 19370 when the procedure is medically necessary and not primarily cosmetic in nature. CMS has published coverage articles on cosmetic and reconstructive breast surgery, including articles 56658 and 58774. These outline the criteria MACs use to evaluate the claims. Always verify the current LCD with your MAC before billing, as coverage criteria are updated periodically.

• RVUs and payment: Work RVU values for 19370 are published in the Medicare Physician Fee Schedule (MPFS) and updated annually. Use the CMS Physician Fee Schedule lookup to retrieve current national and locality-adjusted payment amounts for the practice. Dollar amounts change with each MPFS update, so citing figures from prior years is a compliance risk.
• Commercial payer variation: Major commercial payers (Aetna, Cigna, BCBS plans) typically follow medical necessity criteria similar to Medicare’s. They may still have tighter prior authorization requirements or different grade thresholds. Request the payer’s specific breast implant revision policy before billing.
• Medicaid: Coverage for 19370 under Medicaid varies significantly by state. Coverage of reconstruction after mastectomy varies by state Medicaid program, and elective capsule revision is state-discretionary. Verify state-level coverage before scheduling.

Modifiers for CPT 19370: Bilateral, RT/LT, and other appends

Modifier selection for CPT code 19370 is straightforward when the procedure is unilateral. Bilateral cases need careful attention to how the payer processes the claim.

Check the AAPC Codify CPT lookup and the individual payer’s modifier policy before submitting bilateral claims. Some regional BCBS plans reject modifier 50 on 193xx codes and require separate RT/LT lines instead.

Global period, bundling, and unbundling rules

CPT code 19370 carries a 90-day global surgical period under the Medicare Physician Fee Schedule, consistent with major surgical procedures. Verify this in the current MPFS database, as global period designations can change with annual updates. During the 90-day window, routine follow-up visits and services related to the surgery are bundled and not separately billable.

• Bundled within the global (not separately billable): Post-op office visits for normal recovery, suture removal, and routine wound checks. The E&M visit that decides to operate is billable on the day of or the day before surgery with modifier -57. Other same-day E&M is bundled.
• Separately billable during the global: New unrelated conditions (append modifier -24 to the E&M) and complications requiring a return to the OR (modifier -78). Services unrelated to the original procedure are billable as well.
• Complete capsulectomy rule: CPT 19371 is not reported with 19370 in the same breast. If the whole capsule was removed with all intracapsular contents, 19371 is the only capsule code to report.
• Implant removal and replacement: Do not report CPT 19328 when the same implant is removed and replaced only to reach the capsule. If a new implant is inserted, report CPT 19342, which already includes removal of the old implant.

When an unbundling denial does come back, a structured denial management process traces it to the coding decision. That stops the same error from repeating on the next breast case.

Documentation requirements: What the operative report must include

The operative report is the primary document a payer auditor reviews when a CPT 19370 claim is queried. Missing any of the following elements is the most direct path to a denial or post-payment recovery demand.

• Clinical indication: State the Baker Grade (III or IV for reconstructive claims) or the specific implant complication driving surgery. Vague language like “capsule issues” does not meet most payer medical necessity criteria.
• Capsule technique: Name each technique performed: capsulotomy, capsulorrhaphy, partial capsulectomy, or a combination. Payers query notes that mention capsule work without saying what was done.
• Extent of capsule work: Describe the incision lines, any capsulorrhaphy sutures, and how much capsule was excised. This is what separates 19370 (partial) from 19371 (complete).
• Implant status: State whether the implant was left in place, temporarily removed and replaced, exchanged for a new implant, or explanted permanently. Each scenario affects what additional codes are appropriate.
• Post-operative plan: Document the anticipated recovery pathway and follow-up schedule. This supports the 90-day global period claim structure and demonstrates medical oversight.

Pre-authorization documentation should also be retained in the claim file alongside the operative report. For reconstructive claims following mastectomy, include evidence of the prior oncologic procedure. Review the medical billing compliance requirements that apply to surgical records before submission.

Common claim denial reasons for CPT 19370 and how to appeal

CPT code 19370 claims fail for predictable reasons. Knowing the denial pattern before submission is how billing teams reduce write-offs on breast surgery codes.

• Cosmetic exclusion: The payer classified the procedure as cosmetic. Appeal with the Baker Grade documentation, pre-op photos, and a physician letter of medical necessity citing the clinical indication and functional impact.
• Missing prior authorization: Claim submitted without an authorization number. Most commercial payers require pre-auth for reconstructive breast surgery. Appeal with the authorization obtained retrospectively, but retro-auth is not guaranteed, so obtain it before scheduling.
• Invalid or missing diagnosis code: A T85 code was submitted without its 7th character, or the payer LCD does not list the diagnosis for 19370. Correct and resubmit with the right episode-of-care suffix and a covered ICD-10 code.
• Bilateral billing error: Payer rejected modifier 50 and requires RT/LT lines, or two unmodified 19370 units were submitted without laterality modifiers. Resubmit using the payer’s preferred bilateral billing format.
• Global period conflict: A related E&M or follow-up visit was billed within the 90-day global period without the appropriate modifier. Remove the bundled service or append modifier -24 with documentation of an unrelated new condition.
• Billed with 19371: Both codes were submitted for the same breast. Review the operative report. If the capsule was removed completely, delete 19370 and keep 19371. If only part was removed, delete 19371.

How practice management software supports 19370 billing workflows

A 19370 claim passes through several hands. The surgeon documents the capsule work, the coder picks the ICD-10 pairing and modifiers, and billing staff chase eligibility and payment. When those steps live in separate spreadsheets and payer portals, a coverage problem often surfaces only after the payer responds.

In Pabau’s claims management software, CMS-1500 claims go to payers electronically through the Claim.MD clearinghouse. Real-time eligibility checks (270/271 transactions) confirm the patient’s coverage before the surgery date, rather than after the claim comes back.

After submission, claim status tracking shows where each 19370 claim sits with the payer. ERA remittances post against the claims they pay, so payment and adjustment details stay with the original claim. Your billing team spends less time switching between portals and more time on the claims that need attention.

Streamline your breast surgery billing workflows

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Conclusion

Before a 19370 claim leaves the practice, read the operative report the way a payer auditor would. It should name the capsule technique, the extent of excision, the Baker grade and what happened to the implant. A surgeon query at that point costs minutes, while an appeal costs weeks.

The trade-off to remember is coverage. The same capsule revision reads as reconstructive with a documented Grade III contracture and as cosmetic without it. The note decides the payment as much as the code does.

Pabau keeps real-time eligibility checks, ERA remittance posting and claim status tracking next to each claim. Your team can follow a 19370 case from eligibility to payment in one place. Book a demo to see how it handles breast surgery claims.

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Frequently asked questions about CPT code 19370