ICD-10-CM 2027
ICD-10 code for Parinaud's syndrome
From the official ICD-10-CM alphabetic index entry “Syndrome › Parinaud's”. Page updated September 29, 2026.
About coding Parinaud's syndrome
The ICD-10-CM code for Parinaud's syndrome is H51.0 (Palsy (spasm) of conjugate gaze).
Within H51 (other disorders of binocular movement), H51.0 is specifically for palsy (spasm) of conjugate gaze. Related codes cover Convergence insufficiency and excess (H51.1), Internuclear ophthalmoplegia (H51.2), other specified disorders of binocular movement (H51.8) and unspecified disorder of binocular movement (H51.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Parinaud's syndrome ICD-10 codes
What is the ICD-10 code for Parinaud's syndrome?
- H51.0 — Palsy (spasm) of conjugate gaze.
Is H51.0 billable?
- Yes. H51.0 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H51.0 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H51.0 as a principal diagnosis.
Is H51.0 a CC or MCC?
- No. H51.0 is neither a CC nor an MCC under MS-DRG v44.0.