0506U
What 0506U is
This code appears in the Medicare NCCI edit tables. It has no RVUs in the CY2026 Physician Fee Schedule file.
Medically Unlikely Edit (MUE)
Medicare caps 0506U at 1 unit per date of service for practitioner claims (MAI 2 - date of service edit (absolute): units above the MUE never pay), rationale: Code Descriptor / CPT Instruction. Units above the cap are denied unless the edit's adjudication rules allow an appeal with documentation.
Billed with 0506U? These codes are bundled into it
0506U is a Column 1 code in 30 active NCCI PTP edits. When one of these Column 2 codes is reported on the same date of service, it is denied as bundled - unless the edit's modifier indicator is 1 and documentation supports a distinct service with an NCCI-associated modifier.
| Column 2 code | Short description | Modifier indicator | |
|---|---|---|---|
0114U | 0 - no modifier bypass | Check pair | |
0398U | 0 - no modifier bypass | Check pair | |
36591 | Draw blood off venous device | 0 - no modifier bypass | Check pair |
36592 | Collect blood from picc | 0 - no modifier bypass | Check pair |
80503 | Path clin consltj sf 5-20 | 1 - modifier may bypass | Check pair |
80504 | Path clin consltj mod 21-40 | 1 - modifier may bypass | Check pair |
80505 | Path clin consltj high 41-60 | 1 - modifier may bypass | Check pair |
81228 | Cytog alys chrml abnr cgh | 1 - modifier may bypass | Check pair |
81229 | Cytog alys chrml abnr snpcgh | 1 - modifier may bypass | Check pair |
81400 | Mopath procedure level 1 | 1 - modifier may bypass | Check pair |
81401 | Mopath procedure level 2 | 1 - modifier may bypass | Check pair |
81402 | Mopath procedure level 3 | 1 - modifier may bypass | Check pair |
81403 | Mopath procedure level 4 | 1 - modifier may bypass | Check pair |
81404 | Mopath procedure level 5 | 1 - modifier may bypass | Check pair |
81405 | Mopath procedure level 6 | 1 - modifier may bypass | Check pair |
81406 | Mopath procedure level 7 | 1 - modifier may bypass | Check pair |
81407 | Mopath procedure level 8 | 1 - modifier may bypass | Check pair |
83789 | Mass spectrometry qual/quan | 1 - modifier may bypass | Check pair |
84311 | Spectrophotometry | 1 - modifier may bypass | Check pair |
88271 | Cytogenetics dna probe | 1 - modifier may bypass | Check pair |
88272 | Cytogenetics 3-5 | 1 - modifier may bypass | Check pair |
88273 | Cytogenetics 10-30 | 1 - modifier may bypass | Check pair |
88274 | Cytogenetics 25-99 | 1 - modifier may bypass | Check pair |
88275 | Cytogenetics 100-300 | 1 - modifier may bypass | Check pair |
88291 | Cyto/molecular report | 1 - modifier may bypass | Check pair |
88365 | Insitu hybridization (fish) | 1 - modifier may bypass | Check pair |
88366 | Insitu hybridization (fish) | 1 - modifier may bypass | Check pair |
88367 | Insitu hybridization auto | 1 - modifier may bypass | Check pair |
96523 | Irrig drug delivery device | 0 - no modifier bypass | Check pair |
G0452 | Molecular pathology interpr | 1 - modifier may bypass | Check pair |
0506U is bundled into these codes
0506U appears as a Column 2 code in 2 active edits. Reported with one of these Column 1 codes on the same date of service, 0506U is the code that denies.
| Column 1 code | Short description | Modifier indicator | |
|---|---|---|---|
0108U | 0 | Check pair | |
81408 | Mopath procedure level 9 | 1 | Check pair |
Data: CMS CY2026 Physician Fee Schedule RVU file (October release, RVU26D) and Medicare NCCI PTP practitioner edits v32.3 (2026 Q4). Verify against the official files before billing or contracting decisions.