Inc&rmvl fb subq tiss smpl
CPT code 10120 covers the surgical removal of a foreign object (like a splinter, glass shard, or metal fragment) that's lodged beneath the skin in the subcutaneous tissue layer. This is a simple removal procedure performed through a small incision.
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
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Billing tips
Document exact depth and layer of foreign body location to justify 10120 versus simpler removal codes (10120 is specifically for subcutaneous tissue, not superficial skin surface)
Impact: Prevents downcoding to 10121 (complicated removal) or denial for insufficient depth; protects $147.18 reimbursement versus potential denial
Verify facility versus non-facility status before billing - office setting yields $147.18 while hospital yields $103.51, a $43.67 difference per procedure
Impact: Place of service code accuracy critical: POS 11 (office) versus POS 22 (hospital outpatient) directly affects payment by 29.7%
When multiple foreign bodies are removed from different anatomic sites, bill 10120 for each site with modifier 59 and detailed documentation of each separate location
Impact: Multiple units without proper modifiers typically bundle to single payment; proper coding can yield $147.18 per site versus single payment
Always append modifier 25 to E/M codes when evaluation determines the need for foreign body removal during same encounter, especially in ED and urgent care settings
Impact: Recovers E/M payment (typically $75-200) that would otherwise bundle; adds 50-135% to total encounter reimbursement
Document failed attempts at non-incisional removal to support medical necessity of incision technique required for 10120
Impact: Strengthens medical necessity defense against audits and prevents downcoding to non-surgical removal methods
For glass or metallic foreign bodies, document use of imaging (X-ray, ultrasound) for localization when applicable, as this supports complexity and may justify additional imaging codes
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