AHA Coding Clinic® for ICD-9 - 1986 January - February; Coding Guidelines

Other (NEC) and Unspecified (NOS) Code Titles

Codes labeled "other specified" (NEC - not elsewhere classified) or "unspecified" (NOS - not otherwise specified) are used only when neither the diagnostic statement nor a thorough review of the medical record provides adequate information to permit assignment of a more specific code. Use the code assignment for "other" or NEC when the information at hand specifies a condition but no separate code for that condition is provided. Use "unspecified" (NOS) when the information at hand does not permit either a more specific or "other" code assignment. When the Alphabetic Index assigns a code to a category labeled "other...

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