AHA Coding Clinic® for ICD-9 - 2004 Issue 4; VOLUMES 1 AND 2 NEW/REVISED DIAGNOSIS CODES
Respirator Dependence
Effective October 1, 2004, code V46.1, Other dependence on machines, respirator, has been expanded to distinguish between respirator dependence status (V46.11) and encounters for respirator dependence during power failure (V46.12). Code V46.11 is used only if there are no complications or malfunctions of the respirator equipment, and is always a secondary code. By contrast, code V46.12 is only acceptable as a principal or first-listed code. V46 Other dependence on machines V46.1 Respirator New Code V46.11 Dependence on respirator, status New Code V46.12 Encounter for respirator dependence during power failure ...
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