**Core Concept**
The American Society of Anesthesiologists (ASA) Physical Status classification system is a widely used system for evaluating the physical health of patients before surgery. It assesses the physical status of a patient, taking into account the presence of systemic disease.

**Why the Correct Answer is Right**
The ASA classification is primarily used to assess the physical health of patients before undergoing anesthesia and surgery, helping anesthesiologists and surgeons to make informed decisions about patient care. This system categorizes patients into different classes based on their physical status, ranging from a healthy patient to a patient with severe systemic disease.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because, while ASA classification does involve consideration of systemic disease, it is not solely for disease classification.
**Option B:** This option is incorrect as it is not directly related to the primary purpose of ASA classification.
**Option C:** This option is incorrect because, although ASA classification considers systemic disease, it is more focused on the patient's overall physical status in relation to anesthesia and surgery.

**Clinical Pearl / High-Yield Fact**
The ASA classification is a crucial tool for anesthesiologists to quickly communicate a patient's physical status, which can significantly impact perioperative care and decision-making.

**Correct Answer:** D. Pre-anesthetic evaluation and assessment of physical status.