| HCS | Hajdu-Cheney syndrome; Hazard Communication Standard; health care support; hourglass contraction of ... |
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| HPCC | health plan purchasing cooperative; high performance computing and communication |
| HS | PACS high-speed picture archive and communication system |
| IMAC | information management, archiving, and communication |
| IMACS | image archiving and communication system |
| insurance claim review | Review of claims by insurance companies to determine liability and amount of payment for various services. The review may also include determination of eligibility of the claimant or beneficiary or of the provider of the benefit; determination that the benefit is covered or not payable under another policy; or determination that the service was necessary and of reasonable cost and quality. (12 Dec 1998) |
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| utilization review | An organised procedure carried out through committees to review admissions, duration of stay, professional services furnished, and to evaluate the medical necessity of those services and promote their most efficient use. (12 Dec 1998) |