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The ICD-10 Procedure Coding System (ICD-10-PCS) is a US system of medical classification used for procedural coding.The Centers for Medicare and Medicaid Services, the agency responsible for maintaining the inpatient procedure code set in the U.S., contracted with 3M Health Information Systems in 1995 to design and then develop a procedure classification system to replace Volume 3 of ICD-9-CM.
The CPT code revisions in 2013 were part of a periodic five-year review of codes. Some psychotherapy codes changed numbers, for example 90806 changed to 90834 for individual psychotherapy of a similar duration. Add-on codes were created for the complexity of communication about procedures.
The RBRVS for each CPT code is determined using three separate factors: physician work, practice expense, and malpractice expense. The average relative weights of these are: physician work (52%), practice expense (44%), malpractice expense (4%). [2] A method to determine the physician work value was the primary contribution made by the Hsiao study.
The Abbreviated Injury Scale (AIS) is an anatomical-based coding system created by the Association for the Advancement of Automotive Medicine to classify and describe the severity of injuries. [ 1 ] [ 2 ] [ 3 ] It represents the threat to life associated with the injury rather than the comprehensive assessment of the severity of the injury. [ 4 ]
The Major Diagnostic Categories (MDC) are formed by dividing all possible principal diagnoses (from ICD-9-CM) into 25 mutually exclusive diagnosis areas.MDC codes, like diagnosis-related group (DRG) codes, are primarily a claims and administrative data element unique to the United States medical care reimbursement system.
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Pulmonary laceration is a common result of penetrating trauma but may also be caused by blunt trauma; broken ribs may perforate the lung, or the tissue may be torn due to shearing forces [5] that result from different rates of acceleration or deceleration of different tissues of the lung. [6]
It covers ICD codes 630 to 679. The full chapter can be found on pages 355 to 378 of Volume 1, which contains all (sub)categories of the ICD-9. Volume 2 is an alphabetical index of Volume 1. Both volumes can be downloaded for free from the website of the World Health Organization.