HCPCS Code M1223: Primary Open‑Angle Glaucoma Plan of Care Documented

What is HCPCS code M1223?

HCPCS code M1223 is used to indicate that a comprehensive, documented plan of care has been established for a patient diagnosed with primary open-angle glaucoma (POAG). This code reflects that the provider, typically an ophthalmologist, has formally developed a treatment and monitoring strategy in connection with this chronic eye condition.

The plan of care must be based on clinical findings and include a targeted approach to reducing intraocular pressure, preserving visual function, and slowing disease progression. M1223 is typically reported during the performance period when a care plan has been newly created or significantly updated in response to changes in the patient's condition.

Purpose of the documented plan of care

This code supports value-based care by confirming that providers have taken essential steps to manage POAG beyond episodic treatment.

The care plan includes the patient's baseline visual function, intraocular pressure targets, current treatments, and follow-up timelines. It also reflects shared decision-making and ensures continuity of care across settings, such as outpatient clinics or hospitals.

The documentation may respond to new clinical signs, worsening symptoms, or insufficient response to prior interventions. By identifying patient-specific treatment goals and ensuring regular monitoring, the plan helps improve long-term outcomes and minimize vision loss.

Documentation requirements for HCPCS code M1223

To report M1223 accurately, providers must show that a structured care plan exists and is tailored to the individual’s glaucoma diagnosis. This documentation must include:

Diagnosis and disease stage

The medical record must confirm a diagnosis of primary open-angle glaucoma and describe its severity or progression stage. This provides the clinical foundation for the plan of care.

Treatment goals and services

Document specific treatment objectives, such as reduction of intraocular pressure, and detail any prescribed therapies (e.g., topical medications, laser treatment, or surgical interventions).

Services like medication adherence support or visual field monitoring should also be included.

Follow-up and monitoring schedule

Indicate when and how the patient will be re-evaluated. This includes frequency of visual field tests, pressure checks, and changes in treatment based on response to therapy.

Billing and reporting guidance for M1223

Code M1223 is typically used for quality reporting purposes and may be tied to performance measures or incentive programs. To ensure proper use:

Confirm the care plan was developed or updated during the performance period.
Ensure the plan is specific to primary open-angle glaucoma and not another ocular condition.
Avoid reporting this code without supporting documentation, as audits may require proof of care planning and follow-through.

Other related HCPCS code

M1222 – Glaucoma plan of care not documented, reason not otherwise specified

Frequently asked questions

HCPCS code M1223 is used to indicate that a plan of care has been documented for a patient diagnosed with primary open-angle glaucoma (POAG). This code helps support quality reporting and care coordination by confirming that appropriate treatment and monitoring strategies have been established during the performance period.

The ICD-10 code H40.11X0 represents primary open-angle glaucoma, unspecified eye, stage unspecified. It’s used when the diagnosis of POAG is confirmed, but the specific eye or stage has not been documented. However, it is a deleted code.

Primary open-angle glaucoma is a chronic, progressive eye disease characterized by increased intraocular pressure that gradually damages the optic nerve. It typically develops without symptoms and is the most common form of glaucoma. Early detection through regular eye exams and proper care planning is key to preventing vision loss.