R45.0 Nervousness

Billable ICD-10-CM code, FY2026.

Applicable to

• Nervous tension

MS-DRG index

Defines the logic of DRG(s) 880 in MDC 19.

Approximate ICD-9-CM (GEMs)

• 799.21 Nervousness

Code annotations containing back-references to R45.0

Back-references to R45

• Type 1 Excludes: F07.0 Personality change due to known physiological condition ("signs and symptoms involving emotional state (R45.-)")

Diagnosis Index entries for R45.0

• Disturbance (s) › nervous, functional
• Irritation › nervous
• Nerves
• Nervous
• Nervous › tension
• Nervousness
• Tension › nervous
• Trouble › nervous

Nearby codes

• R45 Symptoms and signs involving emotional state
• R45.0 Nervousness (this code)
• R45.1 Restlessness and agitation
• R45.2 Unhappiness
• R45.3 Demoralization and apathy
• R45.4 Irritability and anger
• R45.5 Hostility