Rplcmt tiss xpndr perm implt

CPT code 11970 covers the replacement of a permanent tissue expander implant, a medical device placed under the skin to stretch tissue for reconstructive purposes, typically after breast surgery or to repair damaged skin.

Showing rates for

National Average

Base Medicare rate

$553.77

This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.

RVU breakdown

Work RVU

7.49

PE RVU (NF)

8.25

MP RVU

1.38

Total RVU

17.12

Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High

NCCI bundling edits

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Billing tips

Verify the original tissue expander placement date and ensure you are outside the 90-day global period before billing 11970 without modifier 78 or 58
Impact: Prevents automatic denials and ensures full $553.77 reimbursement rather than reduced global period rate
Document medical necessity clearly, including specific reason for replacement (deflation, infection, malposition, size change) with clinical findings and decision-making rationale
Impact: Reduces medical necessity denials which account for 35-40% of rejections for this code
Bill supply costs separately using C-codes or HCPCS codes for the tissue expander device itself, as 11970 covers only the professional surgical service
Impact: Recovers device cost averaging $1,200-$3,500 which is not included in the $553.77 physician fee
For bilateral procedures, use modifier 50 rather than billing two line items with RT/LT to avoid claim edits and processing delays
Impact: Ensures proper 150% reimbursement ($830.66) and reduces adjudication time by 7-10 days
When replacement is due to complication or infection, ensure separate diagnosis codes (T85.42XA for infection, T85.828A for complications) are sequenced appropriately
Impact: Supports medical necessity and may qualify for modifier 78 payment at 70-80% rather than claim denial
Coordinate with facility coding team to ensure ASC/hospital uses appropriate revenue codes and avoids duplicate billing of the surgical service
Impact: Prevents bundling issues and ensures both professional ($553.77) and facility components are paid

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Frequently asked questions

What is the Medicare reimbursement rate for CPT code 11970 in 2025?

The 2025 Medicare national average reimbursement for CPT 11970 is $553.77 for both facility and non-facility settings. This rate is based on 17.12 total RVUs (7.49 work RVU, 8.25 PE RVU, 1.38 MP RVU) multiplied by the 2025 conversion factor of 32.3465.

Can CPT 11970 be billed bilaterally with modifier 50?

Yes, CPT 11970 can be billed with modifier 50 when bilateral tissue expander replacement is performed during the same operative session. Medicare typically reimburses bilateral procedures at 150% of the unilateral rate, resulting in approximately $830.66 for bilateral replacement.

What is the difference between CPT 11970 and 11960?

CPT 11960 is for the initial insertion of a tissue expander, while CPT 11970 is specifically for replacement of a previously placed tissue expander. Code 11970 should only be used when an existing expander is removed and a new expander is placed, not for initial insertion or final implant exchange.

How do I bill for tissue expander replacement during the global period?

If replacement occurs during the 90-day global period of the original insertion, use modifier 78 for unplanned returns due to complications (typically reimbursed at 70-80%) or modifier 58 for planned staged procedures (full reimbursement). Include documentation supporting the modifier choice to avoid denials.

What diagnosis codes support medical necessity for CPT 11970?

Common supporting diagnosis codes include Z42.1 (breast reconstruction following mastectomy), T85.42XA (infection of tissue expander), T85.828A (other complications of tissue expander), Z45.81 (encounter for adjustment of breast implant), and M96.89 (complications following mastectomy). The diagnosis must clearly justify why replacement rather than removal or adjustment is necessary.

Is the tissue expander device cost included in CPT 11970 reimbursement?

No, CPT 11970 covers only the physician's professional surgical service. The tissue expander device itself must be billed separately using appropriate supply codes (C-codes in hospital outpatient or HCPCS codes), as device costs typically range from $1,200 to $3,500 and are not included in the $553.77 physician fee.

What modifiers are most commonly used with CPT 11970?

The most common modifiers for 11970 are: 50 (bilateral procedure), RT/LT (laterality indicators), 78 (unplanned return during global period), 58 (staged procedure), and 22 (increased procedural services). Modifier selection depends on whether the procedure is unilateral or bilateral, timing relative to original insertion, and procedural complexity.