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Diagnostic Coding Worksheet

Complete Parts A through D of this worksheet.

Resources: Ch. 4 and Ch. 18 of Medical Insurance: A Revenue Cycle Process Approach (7th ed.), CMS.gov, and internet coding resources

Part A: Diagnosis Code Category

Complete the tables below.

Determine a diagnosis code for the following case studies and include your reference.

Case Study Diagnosis Code or Resource
EXAMPLE: A 44-year-old male presents to the office complaining of intermittent chest pain. The physician orders an EKG to rule out a possible cardiac event. Patient is diagnosed with atypical chest pain.  

Atypical chest pain: ICD10 code: R07.89

 

Source: CMS.gov

1.      A 68-year-old male presents to the office complaining of pronounced weakness on the right side of his body and slurred speech for the past 24 hours. Based on the examination, the physician orders an MRI to investigate a possible transient ischemic attack (TIA). Patient is diagnosed with a TIA.  
2.      A 72-year-old diabetic female exhibits an open wound on her left foot. Initial encounter.  
3.      A 45-year-old male patient presents to the office complaining of headaches for the past 24 hours. Based on the examination, the physician orders an MRI to investigate a possible brain tumor. The MRI was negative. The patient was diagnosed with a migraine.  

 

 

 

Part B: More Coding

Highlight the correct code that would be used when billing using the table of drugs and chemicals.

Diagnosis Code
1.      Unintentional Poisoning Antifreeze (Alcohol).

Initial encounter.

 

A.     T44.0X1A
B.     T51.1X1A
C.     T45.8X3S
D.     T51.1X4D
2.      Patient has a diagnosis of poisoning with intent to self-harm with Nadolol.

Initial encounter.

 

A.     T45.8X1AD
B.     T50.8X6S
C.     T48.203A
D.     T44.7X2A
3.      Patient has diagnosis of poisoning undetermined furniture polish.

Subsequent encounter.

 

A.     T65.892S
B.     T65.894D
C.     T52.8X3S
D.     T50.6X6A
4.      Patient has diagnosis under dosing Furosemide.

Initial encounter.

 

A.     T50.1X6A
B.     T50.1X5A
C.     T45.8X1S
D.     T62.1X1D
5.      Patient has diagnosis poisoning assault hair dye.

Initial encounter.

A.     T458X1A
B.     T50.901D
C.     T573X3D
D.     T49.4X3A

 

 

 

Part C

Highlight the correct code that would be used when referencing the Neoplasm table.

Diagnosis Code
1.      Patient has malignant primary neoplasm of the tonsil, unspecified

 

A.     C11.0
B.     C09.9
C.     C11.8
D.     C09.0
2.      Patient has secondary neoplasm of the stomach (body)

 

A.     C16.1
B.     C24.0
C.     D13.1
D.     C78.89
3.      Patient had benign neoplasm of the liver

 

A.     D13.4
B.     C22.8
C.     D01.5
D.     D49.0
4.      Patient has malignant neoplasm of the duodenum ca in situ

 

A.     D01.49
B.     D13.2
C.     C17.0
D.     C17.2
5.      Patient has unspecified neoplasm of the pancreas duct, unspecified A.     C78.89
B.     C25.0
C.     D49.0
D.     D37.0

 

 

 

Part D

Define each external code. An example has been provided for you.

Code Meaning
EXAMPLE: W00.0XXA Fall due to ice and snow on same level, initial encounter.
1.      V01.00XD  
2.      V95.01XA  
3.      X10.1XXA  
4.      V50.6XXA  

 

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