Tangntl bx skin ea sep/addl
CPT code 11103 is for taking an additional shallow skin biopsy (shaving or scraping a thin layer of skin) when the doctor needs to sample more than one suspicious spot during the same visit.
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
Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High
NCCI bundling edits
Loading bundling edits…
Billing tips
Always bill 11103 with primary code 11102 - never as a standalone service
Impact: Billing 11103 alone will result in automatic denial; 11102 must appear on the same claim for the $21.03-$47.87 payment
Report one unit of 11103 for each additional lesion beyond the first, up to the number actually biopsied
Impact: Each unit generates $21.03 (facility) or $47.87 (non-facility); biopsying 5 lesions = 1x11102 + 4x11103 = potential $191.48 additional revenue non-facility
Document distinct anatomic locations for each biopsy site to support medical necessity and modifier use
Impact: Prevents denials for duplicate services; auditors look for specific anatomic descriptors (e.g., 'left forearm, right shoulder, upper back, left calf')
Verify place of service matches your billing - office (POS 11) receives $47.87 while hospital outpatient (POS 22) receives $21.03
Impact: Incorrect POS coding results in $26.84 underpayment per additional biopsy or potential overpayment recoupment
Include pathology report correlation in documentation showing each specimen was sent separately or marked with distinct anatomic identifiers
Impact: Strengthens medical necessity during audits; separate pathology specimens justify separate biopsy charges and reduce denial rate by approximately 40%
Check payer-specific limits on number of biopsies per session - some Medicare contractors cap at 3-4 lesions without additional documentation
Impact: Exceeding limits without supporting documentation may trigger prepayment review or denial; prior authorization may increase approval rate from 60% to 95%
Real billers contribute denial patterns and appeal strategies for this code. Once 5+ reports come in, you’ll see live aggregated data here — the only place this exists, free.
Get the free Revenue Protection Toolkit — the denial triggers, modifier pitfalls, and bundling conflicts that quietly cost you reimbursement. Instant download.
Help build the field knowledge
MedPayIQ gets smarter as billers contribute. If you've had this code denied, share what happened so others learn from it. Anonymous, no patient info.