WGU D521 note-taking guide with complete solution

D521: Intro to Medical Coding
Note-taking Guide
D521 Section 1: What is Medical Coding?
ICD-10-PCS codes must always have _3 characters.

ICD-10-CM codes have between _3 and 7_ characters.

List the differences between ICD-9-CM and ICD-10-CM

There are nearly 19 times as many procedure codes in ICD-10-PCS than in ICD-9-CM volume 3



There are nearly 5 times as many diagnosis codes in ICD-10-CM than in ICD-9-CM



ICD-10 has alphanumeric categories instead of numeric ones.



ICD-10-CM contains twenty-one chapters, while ICD-9-CM has seventeen chapters and two supplemental
classifications.



ICD-10-CM groups injuries by anatomical site, whereas ICD-9-CM places these conditions in a single
chapter.



ICD-10-CM codes are alphanumeric and have five, six, or seven digits, making them more specific, while
ICD-9-CM codes have three to five characters.

, List the differences between ICD-9 procedure codes and ICD-10-PCS



The ICD-9-PCS has about 4000 procedure cores while the ICD- has about 72,000 codes




ICD-9-CM valid codes have 4 digits, all numeric while the ICD-10-PCS valid codes all have seven
alphanumeric characters



_ICD-9 uses the decimal after second digit while the ICD-10-PCS no decimals are used




With the ICD-9 -Cm procedure code often contained diagnostic concepts but with the ICD-10-PCS the
procedure codes are descriptive of the body, system, body part, root operation, approach, device and
certain additional qualifying characters



With the ICD-9-Cm eponymic terms are common, but with the ICD-10 PCS there are no eponyms.




With the ICD-9-Cm the coding process involved finding procedures in the index and verifying it in the
tabular list, but in with ICD-10-PCS the coding process is directly form the body system/root operation
tables




What items are included in History of Present Illness? Duration, Location, Timing, Severity, Symptoms,
Context, Quality and Modifying factors.