actually, ICD-9 is for diagnosis and procedure analysis, CPT is for billing mainly procedures.

there are crosswalks between the two, HCIA sells the CD-ROMs. they are done by year.

I believe AMA holds the CPT copyright.

the recommended way to do the conversion is CPT to ICD-9. but not all in both sets have a corresponding partner in the other.

>>> "Karsten M. Self" <kmself@IX.NETCOM.COM> 4/19/01 4:07:40 PM >>> on Thu, Apr 19, 2001 at 04:34:44PM -0400, Ephraim Shapiro (ephraim.shapiro@NYU.EDU) wrote: > Hi, > I am working with Medicaid data that contains ICD9 codes but need > to do analysis based on CPT codes. Does anyone know of any mapping > tables or software that's available for free (or at least relatively > low-cost) to perform this conversion? > Thank you in advance for any information on this.

They're different beasts. There is no mapping.

ICD9 codes are diagnostic codes. CPT-4 codes are treatment codes. While there is typically a relationship between diagnosis and treatment, one cannot be determined from the other.

-- Karsten M. Self <kmself@ix.netcom.com> http://kmself.home.netcom.com/ What part of "Gestalt" don't you understand? There is no K5 cabal http://gestalt-system.sourceforge.net/ http://www.kuro5hin.org