H50.661: Superior oblique muscle entrapment, right eye
H50.661, superior oblique muscle entrapment, right eye, is listed as a covered diagnosis in 8 Medicare billing and coding articles that apply to 6 HCPCS Level II codes, including J0585 (Injection, onabotulinumtoxina, 1 unit), J0588 (Injection, incobotulinumtoxin a, 1 unit), J0586 (Injection, abobotulinumtoxina, 5 units). The articles come from 5 Medicare contractors. A listed diagnosis supports medical necessity only; coverage still depends on the LCD's criteria and on documentation in the medical record.
HCPCS Level II codes with H50.661 as a covered diagnosis
| Code | Description | Medicare coverage | DMEPOS fee 2026 (state range) | Articles listing it |
|---|---|---|---|---|
| J0585 | Injection, onabotulinumtoxina, 1 unit | Special coverage instructions apply | — | 6 |
| J0588 | Injection, incobotulinumtoxin a, 1 unit | Carrier judgment | — | 6 |
| J0586 | Injection, abobotulinumtoxina, 5 units | Carrier judgment | — | 6 |
| J0587 | Injection, rimabotulinumtoxinb, 100 units | Special coverage instructions apply | — | 6 |
| J0589 | Injection, daxibotulinumtoxina-lanm, 1 unit | Carrier judgment | — | 6 |
| G0255 | Current perception threshold/sensory nerve conduction test, (snct) per limb, any nerve | Non-covered by Medicare | Not covered | 2 |
Medicare policy articles listing H50.661
- A57185: Billing and Coding: Botulinum Toxin Injections (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A57186: Billing and Coding: Botulinum Toxin Injections (Noridian Healthcare Solutions, LLC (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A59707: Billing and Coding: Botulinum Toxin Injections (Wellpoint Federal (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A59714: Billing and Coding: Botulinum Toxin Injections (Palmetto GBA (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A59726: Billing and Coding: Botulinum Toxins Injections (CGS Administrators, LLC (MAC - Part A, MAC - Part B); 5 Level II codes)
- A59809: Billing and Coding: Botulinum Toxin Injections (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 5 Level II codes). LCD with the same title: L35170, L35172, L39832, L39836
- A57478: Billing and Coding: Nerve Conduction Studies and Electromyography (WPS Insurance Corporation (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
- A56619: Billing and Coding: Nerve Conduction Studies and Electromyography (Palmetto GBA (MAC - Part A, MAC - Part B); 1 Level II codes). LCD with the same title: L34594, L34859, L35048, L35081
A diagnosis listed as covered in a billing and coding article supports medical necessity for the article's codes; it does not guarantee payment. Coverage depends on the LCD's criteria, the contractor's jurisdiction and documentation in the medical record.
Other H50 diagnoses (Other strabismus)
- H50.662 — Superior oblique muscle entrapment, left eye
- H50.60 — Mechanical strabismus, unspecified
- H50.611 — Brown's sheath syndrome, right eye
- H50.612 — Brown's sheath syndrome, left eye
- H50.621 — Inferior oblique muscle entrapment, right eye
- H50.622 — Inferior oblique muscle entrapment, left eye
- H50.631 — Inferior rectus muscle entrapment, right eye
- H50.632 — Inferior rectus muscle entrapment, left eye
- H50.641 — Lateral rectus muscle entrapment, right eye
- H50.642 — Lateral rectus muscle entrapment, left eye
- H50.651 — Medial rectus muscle entrapment, right eye
- H50.652 — Medial rectus muscle entrapment, left eye
- H50.671 — Superior rectus muscle entrapment, right eye
- H50.672 — Superior rectus muscle entrapment, left eye
- H50.681 — Extraocular muscle entrapment, unspecified, right eye
- H50.682 — Extraocular muscle entrapment, unspecified, left eye
- H50.69 — Other mechanical strabismus
- H50.00 — Unspecified esotropia
- H50.011 — Monocular esotropia, right eye
- H50.012 — Monocular esotropia, left eye
- H50.021 — Monocular esotropia with A pattern, right eye
- H50.022 — Monocular esotropia with A pattern, left eye
- H50.031 — Monocular esotropia with V pattern, right eye
- H50.032 — Monocular esotropia with V pattern, left eye
- H50.041 — Monocular esotropia with other noncomitancies, right eye
- H50.042 — Monocular esotropia with other noncomitancies, left eye
- H50.05 — Alternating esotropia
- H50.06 — Alternating esotropia with A pattern
- H50.07 — Alternating esotropia with V pattern
- H50.08 — Alternating esotropia with other noncomitancies
Frequently asked questions
Does Medicare cover H50.661 (Superior oblique muscle entrapment, right eye)?
Medicare covers items and services, not diagnoses. 8 Medicare billing and coding articles list H50.661 as a covered diagnosis for 6 HCPCS Level II codes: the diagnosis can support medical necessity for those codes, but payment still depends on the LCD's coverage criteria and the medical record.
Which HCPCS codes can be billed with ICD-10 H50.661?
The Level II codes from the policies most specific to this diagnosis are J0585 (Injection, onabotulinumtoxina, 1 unit, 6 articles); J0588 (Injection, incobotulinumtoxin a, 1 unit, 6 articles); J0586 (Injection, abobotulinumtoxina, 5 units, 6 articles); J0587 (Injection, rimabotulinumtoxinb, 100 units, 6 articles); J0589 (Injection, daxibotulinumtoxina-lanm, 1 unit, 6 articles). Code choice depends on the item supplied; check each code's descriptor.
Which Medicare policy articles list H50.661?
A57185 (Billing and Coding: Botulinum Toxin Injections); A57186 (Billing and Coding: Botulinum Toxin Injections); A59707 (Billing and Coding: Botulinum Toxin Injections), and 5 more articles.
What is ICD-10-CM code H50.661?
H50.661 is the ICD-10-CM code for superior oblique muscle entrapment, right eye, in category H50 (Other strabismus), chapter 7: Diseases of the eye and adnexa.
Next steps
- Run a reimbursement report for a device billed under J0585
- Watch J0585 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for J0585
Sources: CMS Medicare Coverage Database billing and coding articles (covered ICD-10 code lists and HCPCS links); ICD-10-CM FY2026; CMS HCPCS Level II release October 2026; CMS DMEPOS fee schedule 2026 (non-rural state fees). Not billing or legal advice.
Chapter 7: Diseases of the eye and adnexa · All diagnoses · HCPCS lookup