ICD-10-CM 2027
ICD-10 code for divergence insufficiency
From the official ICD-10-CM alphabetic index entry “Insufficiency, insufficient › divergence”. Page updated September 29, 2026.
About coding divergence insufficiency
The ICD-10-CM code for divergence insufficiency is H51.8 (Other specified disorders of binocular movement).
Within H51, choose H51.8 (Other specified disorders of binocular movement) only when documentation doesn't support a more specific option: palsy (spasm) of conjugate gaze (H51.0), Convergence insufficiency and excess (H51.1), Internuclear ophthalmoplegia (H51.2) 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 123 (Neurological Eye Disorders, relative weight 0.822), 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 divergence insufficiency ICD-10 codes
What is the ICD-10 code for divergence insufficiency?
- H51.8 — Other specified disorders of binocular movement.
Is H51.8 billable?
- Yes. H51.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can H51.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict H51.8 as a principal diagnosis.
Is H51.8 a CC or MCC?
- No. H51.8 is neither a CC nor an MCC under MS-DRG v44.0.