1. R33 Retention of urine

    1. R33.0 Drug induced retention of urine

    2. R33.8 Other retention of urine

    3. R33.9 Retention of urine, unspecified

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.