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What is the ICD-10-CM code for a bruised left knee, initial encounter?

A. S90.912A
B. S89.92XA
C. S80.02XA
D. S81.031A

Answer :

The correct ICD-10-CM code for a bruised left knee, initial encounter is S80.02XA.

Here's the breakdown:

1. Understand the condition: We are looking for a code that represents a "bruised left knee."

2. ICD-10-CM Structure:
- Codes starting with 'S' describe injuries and other external causes.
- The specific code for a contusion (bruise) of the knee is what we're searching for here.

3. Initial Encounter: The 'A' at the end of the code signifies it's an initial encounter, meaning it's the first time the patient is being seen for this condition.

4. Left Side Specification: The code we need should specifically indicate the injury is on the left knee.

From these considerations, S80.02XA is the best match for a bruised left knee, initial encounter:
- "S80" covers injuries to the knee and lower leg.
- "02" specifies a contusion, or bruise.
- "X" is a placeholder in ICD-10-CM coding for situations where a code needs to be a certain length for specificity.
- "A" confirms it is the initial encounter.

Therefore, S80.02XA is the accurate code for documenting a bruised left knee when seeing the patient for the first time regarding this particular injury.