ICD-10 Code H40.159

Residual stage of open-angle glaucoma, unspecified eye

Version 2019 Billable Code Unacceptable Principal Diagnosis
ICD-10:H40.159
Short Description:Residual stage of open-angle glaucoma, unspecified eye
Long Description:Residual stage of open-angle glaucoma, unspecified eye

Valid for Submission

ICD-10 H40.159 is a billable code used to specify a medical diagnosis of residual stage of open-angle glaucoma, unspecified eye. The code is valid for the year 2019 for the submission of HIPAA-covered transactions.

Code Classification

Information for Medical Professionals

Code Edits

The Medicare Code Editor (MCE) detects and reports errors in the coding of claims data. The following ICD-10 Code Edits are applicable to this code:

  • Unacceptable principal diagnosis - There are selected codes that describe a circumstance which influences an individual’s health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code H40.159 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 124 - OTHER DISORDERS OF THE EYE WITH MCC
  • 125 - OTHER DISORDERS OF THE EYE WITHOUT MCC

Convert H40.159 to ICD-9

The following crosswalk between ICD-10 to ICD-9 is based based on the General Equivalence Mappings (GEMS) information:

  • 365.15 - Residual opn ang glaucma (Approximate Flag)

Synonyms

The following clinical terms are approximate synonyms:

  • Residual stage of open angle glaucoma

Information for Patients


Glaucoma

Glaucoma is a group of diseases that can damage the eye's optic nerve. It is a leading cause of blindness in the United States. It usually happens when the fluid pressure inside the eyes slowly rises, damaging the optic nerve. Often there are no symptoms at first. Without treatment, people with glaucoma will slowly lose their peripheral, or side vision. They seem to be looking through a tunnel. Over time, straight-ahead vision may decrease until no vision remains.

A comprehensive eye exam can tell if you have glaucoma. People at risk should get eye exams at least every two years. They include

  • African Americans over age 40
  • People over age 60, especially Mexican Americans
  • People with a family history of glaucoma

There is no cure, but glaucoma can usually be controlled. Early treatment can help protect your eyes against vision loss. Treatments usually include prescription eyedrops and/or surgery.

NIH: National Eye Institute

  • Glaucoma (Medical Encyclopedia)
  • Ophthalmoscopy (Medical Encyclopedia)
  • Standard ophthalmic exam (Medical Encyclopedia)
  • Tonometry (Medical Encyclopedia)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.