SK is a valid 2023 HCPCS Modifier that could be used to indicate Member of high risk population (use only with codes for immunization).
SK Modifier has been in effect since Apr 01, 2002.
High risk population
SK Modifier information
| Modifier: | SK |
| Description: | MEMBER OF HIGH RISK POPULATION (USE ONLY WITH CODES FOR IMMUNIZATION) |
| Effective Date: | Apr 01, 2002 |
| Added Date: | Apr 01, 2002 |
| Coverage code: | I - NOT VALID FOR MEDICARE (NO GRACE PERIOD) |
| Action code: | N - NO MAINTENANCE FOR THIS CODE |
Below a selection of HCPCS Modifiers related to SK