Wiki Outpatient coding-what books do I need?

You need the ICD-9 CM for the diagnosis and the CPT for the procedures. You will not use the ICD-9 CM vol 3 for procedures for outpatient coding.
 
You may also need a HCPCS level II book, I find helpful as well the Coder's Desk Reference for procedures/diagnosis as well.
 
You do not use ICD-9 CM procedure code (Volume 3) for outpatient, those are for facility inpatient only.
You use CPT code for procedures.
 
If your doing speciality coding I highly recomend the Ingenix Coding Companions. I code for four specialities, and these are my life lines.
 
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