On 1 January 1999 the ICD-10 was adopted for reporting mortality, but ICD-9-CM was still used for morbidity. NCHS 
received permission from the WHO to create a clinical modification of the ICD-10, and has produced drafts of the following two systems: ICD-10-CM, for diagnosis codes, is intended to replace volumes 1 and 2. A draft was completed in 2003 and ICD-10-PCS, for procedure codes, is intended to replace volume 3. A final draft was completed in 2000 (source: wikipedia.org)
Several Countries which have already moved to ICD-10, including: United Kingdom (1995); France (1997); Australia (1998); Germany (2000); and Canada (2001). ICD-11 system (authored by WHO) is expected in 2010, with publication following by 2014 and in 2015+ implementation.
In the article below we can find information about ICD-10 CM/PCS that including the necessary detail on either patients’ medical conditions or on procedures performed on hospitalized patients, sections that not found in ICD-9-CM. By using newly version of ICD, it is hope that classification system provides significant improvements through greater detailed information and the ability to expand in order to capture additional advancements in clinical medicine.
We can find such updated sections of previously version with example that show where ICD-10-CM/PCS codes are more precise and provide better information, Structural Differences between those two, and Implementation Planning Recommendations.
Read completely about ICD-10 CM/PCS, Currently Generation of Procedure Coding System in 1.3 Mb, 4 pages in pdf filetype (source: cms.hhs.gov).
