1. Procedure and CPT® Code Selection:

The patient underwent an appendectomy performed via laparoscopic approach. The procedure involved removal of the appendix using a scope inserted through an umbilical incision.

CPT® Code 44970 is specific for a laparoscopic appendectomy, which is the correct code for this procedure.

Code 44950 would be used for an open appendectomy, but since this case was performed laparoscopically, 44970 is appropriate.

2. Diagnosis and ICD-10-CM Code Selection:

The diagnosis given by the physician is chronic appendicitis.

ICD-10-CM Code K36 is used to report chronic appendicitis, which is the definitive diagnosis in this case.

Additional codes for symptoms such as nausea (R11.2) and right lower quadrant pain (R10.31) are not necessary because the primary diagnosis of chronic appendicitis (K36) fully explains the symptoms, according to ICD-10-CM guidelines on coding symptoms when a definitive diagnosis is available.

3. AAPC and CPT® Coding Guidelines:

AAPC guidelines indicate that when a definitive diagnosis is established, symptom codes should not be reported separately. The use of 44970 for laparoscopic appendectomy and K36 for chronic appendicitis is fully supported by these coding standards.

Therefore, the correct answer is C. 44970, K36.