R29.0 Tetany

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applicable to

• Carpopedal spasm

Excludes1 (never code together)

• hysterical tetany (F44.5)
• neonatal tetany (P71.3)
• parathyroid tetany (E20.9)
• post-thyroidectomy tetany (E89.2)

MS-DRG index

Defines the logic of DRG(s) 640-641 in MDC 10.

Approximate ICD-9-CM (GEMs)

• 781.7 Tetany

Code annotations containing back-references to R29.0

Back-references to R29.0

• Type 1 Excludes: E20 Hypoparathyroidism ("tetany NOS (R29.0)")
• Type 2 Excludes: R25.2 Cramp and spasm ("carpopedal spasm (R29.0)")

Diagnosis Index entries for R29.0

• Diathesis › spasmophilic
• Pseudotetany
• Syndrome › magnesium-deficiency
• Tetany (due to)
• Tetany (due to) › convulsions
• Tetany (due to) › hyperkinetic
• Tetany (due to) › pseudotetany

Nearby codes

• R29 Other symptoms and signs involving the nervous and musculoskeletal systems
• R29.0 Tetany (this code)
• R29.1 Meningismus
• R29.2 Abnormal reflex
• R29.3 Abnormal posture
• R29.4 Clicking hip
• R29.5 Transient paralysis