MCMedicalCodingSoftware
R29.2

R29.2: Abnormal reflex

Billable / specific codeICD-10-CM

R29.2 is a billable, specific ICD-10-CM code for abnormal reflex. It is valid for submission on a claim.

Check R29.2 with the rest of the claim: free scrubber

Excludes2: not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

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

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

R29.2 is named in 5 Medicare coverage policies: 5 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A57123Billing and Coding: Nerve Conduction Studies and Electromyography
  • A57204Billing and Coding: MRI and CT Scans of the Head and Neck
  • A57206Billing and Coding: Lumbar MRI

Alphabetic index entries that lead here

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

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under R29

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.