K flow/funct image w/o drug
CPT 78707 is a nuclear medicine imaging test that examines blood flow and kidney function without using any drugs to stimulate the kidneys during the scan.
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
Clearly document why drug intervention (diuretic or ACE inhibitor) was NOT used to differentiate from CPT 78708
Impact: Prevents $30-50 in denial and reprocessing costs; 78708 bundles drug administration and has different reimbursement
Verify that flow images were actually acquired and documented; flow imaging is required for 78707
Impact: Missing flow documentation causes 18-25% of denials; downcoding to function-only codes reduces reimbursement by approximately $40-60
Bill global code without modifiers when performed in hospital outpatient department where facility owns equipment
Impact: Maintains full $206.05 reimbursement; improper modifier splits can delay payment 15-30 days
Submit with appropriate ICD-10 codes indicating specific renal pathology or transplant status
Impact: Generic diagnosis codes like R94.4 cause 12-15% denial rate; specific codes (N18.x, Z94.0) improve first-pass acceptance by 22%
Separate billing date from radiopharmaceutical administration if performed on different days
Impact: Prevents bundling denials for multi-day protocols; ensures proper reimbursement timing
Document total imaging time and number of images acquired for medical necessity defense
Impact: Reduces audit vulnerability by 35%; supports medical necessity during post-payment review
Common denials
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.