| Attribute Type | Expanded Form | Count |
| HMP | HCPCS Multiple Pricing Indicator Code - code used to identify instances where a procedure could be priced. | 838 |
| HAD | HCPCS Action Effective Date - effective date of action to a procedure or modifier code. | 838 |
| HCD | HCPCS Code Added Date - year the HCPCS code was added to the HCFA Common Procedure Coding System. | 838 |
| HBT | HCPCS Berenson-Eggers Type of Service Code - BETOS for the procedure code based on generally agreed upon clinically meaningful groupings of procedures and services. | 838 |
| HCC | HCPCS Coverage Code - code denoting Medicare coverage status. There are two subelements separated by "=". | 838 |
| HPI | HCPCS Pricing Indicator Code - used to identify the appropriate methodology for developing unique pricing amounts under Part B. | 838 |
| HAC | HCPCS action code - code denoting the change made to a procedure or modifier code within the HCPCS system. | 838 |
| HTS | HCPCS Type of Service Code - carrier assigned HCFA Type of Service which describes the particular kind(s) of service represented by the procedure code. | 838 |
| HAQ | HCPCS Anesthesia Base Unit Quantity - base unit represents the level of intensity for anesthesia procedure services that reflects all activities except time. | 838 |
| HPN | HCPCS processing note number identifying the processing note contained in Appendix A of the HCPCS Manual. | 781 |
| HTD | HCPCS Termination Date - last date for which a procedure or code may be used by Medicare Providers. | 38 |
| HSN | HCPCS Statute Number identifying statute reference for coverage or noncoverage of procedure or service. | 21 |
| HMR | HCPCS Medicare Carriers Manual reference section number - number identifying a section of the Medicare Carriers Manual. | 19 |
| HXR | HCPCS Cross reference code - an explicit reference crosswalking a deleted code or a code that is not valid for Medicare to a valid current code (or range of codes). | 7 |
