R29.2 Abnormal reflex

Billable ICD-10-CM code, FY2026.

Excludes2 (not included here)

• abnormal pupillary reflex (H57.0)
• hyperactive gag reflex (J39.2)
• vasovagal reaction or syncope (R55)

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 796.1 Abnormal reflex

Diagnosis Index entries for R29.2

• Abnormal, abnormality, abnormalities › knee jerk
• Abnormal, abnormality, abnormalities › plantar reflex
• Areflexia
• Disorder (of) › reflex
• Disturbance (s) › motor
• Disturbance (s) › reflex
• Hyper-reflexia
• Hyporeflexia
• Poor › sucking reflex (newborn)
• Reflex

Nearby codes

• R29 Other symptoms and signs involving the nervous and musculoskeletal systems
• R29.0 Tetany
• R29.1 Meningismus
• R29.2 Abnormal reflex (this code)
• R29.3 Abnormal posture
• R29.4 Clicking hip
• R29.5 Transient paralysis
• R29.6 Repeated falls
• R29.7 National Institutes of Health Stroke Scale (NIHSS) score