The patient was admitted with increasing shortness of breath, weakness, and nonproductive cough. Treatment included oxygen therapy. Final diagnoses listed as acute respiratory insufficiency and acute exacerbation of chronic obstructive pulmonary disease (COPD). Which of the following is the correct diagnostic code assignment?

ICD-9-CM Code(s):

a. 491.21
b. 491.21, 518385
c. 518.81, 491.21
d. 518382, 491.21

ICD-10-CM Code(s):__________________

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518.81, 491.21

To determine the correct diagnostic code assignment, we need to identify the ICD-9-CM and ICD-10-CM codes that correspond to the diagnosis of acute respiratory insufficiency and acute exacerbation of chronic obstructive pulmonary disease (COPD).

Let's break down the information to find the correct code:

1. The final diagnoses mentioned are acute respiratory insufficiency and acute exacerbation of COPD.
2. In ICD-9-CM, the code for acute respiratory insufficiency is 518.81, and the code for acute exacerbation of COPD is 491.21.
3. In ICD-10-CM, the codes for acute respiratory insufficiency and acute exacerbation of COPD are J96.11 and J44.1, respectively.

Now, let's consider the options and find the correct code assignment:

a. 491.21: This code alone only represents acute exacerbation of COPD. It does not include acute respiratory insufficiency, so it is not the correct code assignment.

b. 491.21, 518385: The code 491.21 is correct for acute exacerbation of COPD, but 518385 does not exist in the ICD-9-CM code set. Therefore, this is not the correct code assignment.

c. 518.81, 491.21: This option includes both codes for acute respiratory insufficiency (518.81) and acute exacerbation of COPD (491.21). The correct code assignment in ICD-9-CM is likely to be c.518.81, 491.21.

d. 518382, 491.21: The code 518382 does not exist in the ICD-9-CM code set. Therefore, this is not the correct code assignment.

Given the options provided, the correct diagnostic code assignment in ICD-9-CM is c. 518.81, 491.21.

Unfortunately, since no corresponding ICD-10-CM codes were provided in the question, I cannot determine the exact ICD-10-CM code assignment. However, I can provide the possible codes for your reference:

- Acute respiratory insufficiency in ICD-10-CM: J96.11
- Acute exacerbation of COPD in ICD-10-CM: J44.1

To find the specific ICD-10-CM code assignment, you would need to consult an ICD-10-CM code book or search an electronic coding system using additional information from the medical record.