ICD Code R40.0

ICD code R40.0 is excessive drowsiness or sleepiness, also known as somnolence.

1. Patient exhibits abnormal drowsiness or sleepiness not attributable to normal sleep patterns

2. Reduced alertness or responsiveness to external stimuli

3. Difficulty maintaining wakefulness during usual waking hours

4. Episodes of falling asleep unintentionally during the day

5. No evidence of coma or stupor

6. Symptoms not better explained by medication side effects, substance use, or acute medical conditions such as hypoglycemia or infection

7. Clinical assessment confirms somnolence as a primary symptom

Relevant CPT codes that may be used to treat ICD code R40.0 include:

- 99202–99215 (Evaluation and Management services)

- 95810 (Polysomnography; sleep study)

- 95811 (Polysomnography with CPAP/BiPAP titration)

- 96116 (Neurobehavioral status exam)

- 96130–96133 (Psychological and neuropsychological testing)

- 99406–99407 (Smoking and tobacco use cessation counseling, if relevant)

- 99417 (Prolonged office or other outpatient evaluation and management service)

These codes should be selected based on the specific clinical scenario and services provided.

See how MD Clarity’s RevFind software can automatically read your payer contracts and identify underpayments for CPT codes associated with ICD code R40.0. Schedule a demo today to ensure you’re capturing every dollar your practice has earned.