Master Billing LLC
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Mohs Surgery Billing

Mohs billing done right —
every stage, every payer.

Mohs surgery is the most complex coding challenge in dermatology. Incorrect stage coding, missing margins documentation, and payer-specific pre-auth gaps cost practices thousands per month. We eliminate all of it.

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Why Mohs Billing Fails
✕
Stage count miscodingCPT 17311 vs 17312 errors on multi-stage procedures
✕
Missing repair linkageFailing to bill repair codes alongside excision correctly
✕
Payer pre-auth gapsMedicare and commercial payer auth requirements vary — missing one triggers denial
✕
Documentation alignmentPathology report, operative note, and claim must align exactly
CPT Code Reference

Every Mohs code,
correctly billed.

Our team codes Mohs claims daily. We know which payers require which modifiers, what documentation must accompany each stage, and how to appeal when they deny without cause.

CPT CodeDescriptionAudit Risk
17311Mohs micrographic surgery, head/neck/hands/feet — first stage, up to 5 tissue blocks
● High
17312Each additional stage — head/neck/hands/feet, up to 5 tissue blocks
● High
17313Mohs micrographic surgery, trunk/scalp/extremities — first stage
● Medium
17314Each additional stage — trunk/scalp/extremities, up to 5 tissue blocks
● Medium
17315Each additional tissue block, any stage, beyond the first 5 blocks
● High
12031–13160Repair codes (layered closure) — must be linked correctly to Mohs CPT
● Medium
14000–14350Adjacent tissue transfer / rearrangement — common Mohs reconstruction
● Medium
Our Mohs Billing Process

What we do
every claim.

Mohs claims require four points of documentation alignment before submission. We verify all four on every single claim — not just when something looks off.

✓
Stage count verificationCross-reference operative note with pathology report to confirm stage count before coding.
✓
Site-specific CPT selectionHead/neck vs trunk/extremity determination drives the 17311/17313 choice — we never guess.
✓
Payer-specific pre-authWe maintain payer-by-payer auth requirements and flag any procedure before it hits the desk uncleared.
✓
Repair code linkageEvery Mohs excision is reviewed for reconstruction CPT eligibility and correctly linked on submission.
✓
Denial root-cause trackingEvery Mohs denial is logged, categorized, and fed back into our coding rules to prevent recurrence.

Is your Mohs coding
leaving money behind?

We'll audit your last 90 days of Mohs claims and identify any miscoding, missed repair linkages, or denial patterns — free of charge.

Talk to a Specialist