ICD-10-CM Code H40.1

Open-angle glaucoma

Version 2021 Non-Billable Code

Not Valid for Submission

H40.1 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of open-angle glaucoma. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions.

ICD-10:H40.1
Short Description:Open-angle glaucoma
Long Description:Open-angle glaucoma

Consider the following ICD-10 codes with a higher level of specificity:

  • H40.10 - Unspecified open-angle glaucoma
  • H40.10X0 - Unspecified open-angle glaucoma, stage unspecified
  • H40.10X1 - Unspecified open-angle glaucoma, mild stage
  • H40.10X2 - Unspecified open-angle glaucoma, moderate stage
  • H40.10X3 - Unspecified open-angle glaucoma, severe stage
  • H40.10X4 - Unspecified open-angle glaucoma, indeterminate stage
  • H40.11 - Primary open-angle glaucoma
  • H40.111 - Primary open-angle glaucoma, right eye
  • H40.1110 - Primary open-angle glaucoma, right eye, stage unspecified
  • H40.1111 - Primary open-angle glaucoma, right eye, mild stage
  • H40.1112 - Primary open-angle glaucoma, right eye, moderate stage
  • H40.1113 - Primary open-angle glaucoma, right eye, severe stage
  • H40.1114 - Primary open-angle glaucoma, right eye, indeterminate stage
  • H40.112 - Primary open-angle glaucoma, left eye
  • H40.1120 - Primary open-angle glaucoma, left eye, stage unspecified
  • H40.1121 - Primary open-angle glaucoma, left eye, mild stage
  • H40.1122 - Primary open-angle glaucoma, left eye, moderate stage
  • H40.1123 - Primary open-angle glaucoma, left eye, severe stage
  • H40.1124 - Primary open-angle glaucoma, left eye, indeterminate stage
  • H40.113 - Primary open-angle glaucoma, bilateral
  • H40.1130 - Primary open-angle glaucoma, bilateral, stage unspecified
  • H40.1131 - Primary open-angle glaucoma, bilateral, mild stage
  • H40.1132 - Primary open-angle glaucoma, bilateral, moderate stage
  • H40.1133 - Primary open-angle glaucoma, bilateral, severe stage
  • H40.1134 - Primary open-angle glaucoma, bilateral, indeterminate stage
  • H40.119 - Primary open-angle glaucoma, unspecified eye
  • H40.1190 - Primary open-angle glaucoma, unspecified eye, stage unspecified
  • H40.1191 - Primary open-angle glaucoma, unspecified eye, mild stage
  • H40.1192 - Primary open-angle glaucoma, unspecified eye, moderate stage
  • H40.1193 - Primary open-angle glaucoma, unspecified eye, severe stage
  • H40.1194 - Primary open-angle glaucoma, unspecified eye, indeterminate stage
  • H40.12 - Low-tension glaucoma
  • H40.121 - Low-tension glaucoma, right eye
  • H40.1210 - Low-tension glaucoma, right eye, stage unspecified
  • H40.1211 - Low-tension glaucoma, right eye, mild stage
  • H40.1212 - Low-tension glaucoma, right eye, moderate stage
  • H40.1213 - Low-tension glaucoma, right eye, severe stage
  • H40.1214 - Low-tension glaucoma, right eye, indeterminate stage
  • H40.122 - Low-tension glaucoma, left eye
  • H40.1220 - Low-tension glaucoma, left eye, stage unspecified
  • H40.1221 - Low-tension glaucoma, left eye, mild stage
  • H40.1222 - Low-tension glaucoma, left eye, moderate stage
  • H40.1223 - Low-tension glaucoma, left eye, severe stage
  • H40.1224 - Low-tension glaucoma, left eye, indeterminate stage
  • H40.123 - Low-tension glaucoma, bilateral
  • H40.1230 - Low-tension glaucoma, bilateral, stage unspecified
  • H40.1231 - Low-tension glaucoma, bilateral, mild stage
  • H40.1232 - Low-tension glaucoma, bilateral, moderate stage
  • H40.1233 - Low-tension glaucoma, bilateral, severe stage
  • H40.1234 - Low-tension glaucoma, bilateral, indeterminate stage
  • H40.129 - Low-tension glaucoma, unspecified eye
  • H40.1290 - Low-tension glaucoma, unspecified eye, stage unspecified
  • H40.1291 - Low-tension glaucoma, unspecified eye, mild stage
  • H40.1292 - Low-tension glaucoma, unspecified eye, moderate stage
  • H40.1293 - Low-tension glaucoma, unspecified eye, severe stage
  • H40.1294 - Low-tension glaucoma, unspecified eye, indeterminate stage
  • H40.13 - Pigmentary glaucoma
  • H40.131 - Pigmentary glaucoma, right eye
  • H40.1310 - Pigmentary glaucoma, right eye, stage unspecified
  • H40.1311 - Pigmentary glaucoma, right eye, mild stage
  • H40.1312 - Pigmentary glaucoma, right eye, moderate stage
  • H40.1313 - Pigmentary glaucoma, right eye, severe stage
  • H40.1314 - Pigmentary glaucoma, right eye, indeterminate stage
  • H40.132 - Pigmentary glaucoma, left eye
  • H40.1320 - Pigmentary glaucoma, left eye, stage unspecified
  • H40.1321 - Pigmentary glaucoma, left eye, mild stage
  • H40.1322 - Pigmentary glaucoma, left eye, moderate stage
  • H40.1323 - Pigmentary glaucoma, left eye, severe stage
  • H40.1324 - Pigmentary glaucoma, left eye, indeterminate stage
  • H40.133 - Pigmentary glaucoma, bilateral
  • H40.1330 - Pigmentary glaucoma, bilateral, stage unspecified
  • H40.1331 - Pigmentary glaucoma, bilateral, mild stage
  • H40.1332 - Pigmentary glaucoma, bilateral, moderate stage
  • H40.1333 - Pigmentary glaucoma, bilateral, severe stage
  • H40.1334 - Pigmentary glaucoma, bilateral, indeterminate stage
  • H40.139 - Pigmentary glaucoma, unspecified eye
  • H40.1390 - Pigmentary glaucoma, unspecified eye, stage unspecified
  • H40.1391 - Pigmentary glaucoma, unspecified eye, mild stage
  • H40.1392 - Pigmentary glaucoma, unspecified eye, moderate stage
  • H40.1393 - Pigmentary glaucoma, unspecified eye, severe stage
  • H40.1394 - Pigmentary glaucoma, unspecified eye, indeterminate stage
  • H40.14 - Capsular glaucoma with pseudoexfoliation of lens
  • H40.141 - Capsular glaucoma with pseudoexfoliation of lens, right eye
  • H40.1410 - Capsular glaucoma with pseudoexfoliation of lens, right eye, stage unspecified
  • H40.1411 - Capsular glaucoma with pseudoexfoliation of lens, right eye, mild stage
  • H40.1412 - Capsular glaucoma with pseudoexfoliation of lens, right eye, moderate stage
  • H40.1413 - Capsular glaucoma with pseudoexfoliation of lens, right eye, severe stage
  • H40.1414 - Capsular glaucoma with pseudoexfoliation of lens, right eye, indeterminate stage
  • H40.142 - Capsular glaucoma with pseudoexfoliation of lens, left eye
  • H40.1420 - Capsular glaucoma with pseudoexfoliation of lens, left eye, stage unspecified
  • H40.1421 - Capsular glaucoma with pseudoexfoliation of lens, left eye, mild stage
  • H40.1422 - Capsular glaucoma with pseudoexfoliation of lens, left eye, moderate stage
  • H40.1423 - Capsular glaucoma with pseudoexfoliation of lens, left eye, severe stage
  • H40.1424 - Capsular glaucoma with pseudoexfoliation of lens, left eye, indeterminate stage
  • H40.143 - Capsular glaucoma with pseudoexfoliation of lens, bilateral
  • H40.1430 - Capsular glaucoma with pseudoexfoliation of lens, bilateral, stage unspecified
  • H40.1431 - Capsular glaucoma with pseudoexfoliation of lens, bilateral, mild stage
  • H40.1432 - Capsular glaucoma with pseudoexfoliation of lens, bilateral, moderate stage
  • H40.1433 - Capsular glaucoma with pseudoexfoliation of lens, bilateral, severe stage
  • H40.1434 - Capsular glaucoma with pseudoexfoliation of lens, bilateral, indeterminate stage
  • H40.149 - Capsular glaucoma with pseudoexfoliation of lens, unspecified eye
  • H40.1490 - Capsular glaucoma with pseudoexfoliation of lens, unspecified eye, stage unspecified
  • H40.1491 - Capsular glaucoma with pseudoexfoliation of lens, unspecified eye, mild stage
  • H40.1492 - Capsular glaucoma with pseudoexfoliation of lens, unspecified eye, moderate stage
  • H40.1493 - Capsular glaucoma with pseudoexfoliation of lens, unspecified eye, severe stage
  • H40.1494 - Capsular glaucoma with pseudoexfoliation of lens, unspecified eye, indeterminate stage
  • H40.15 - Residual stage of open-angle glaucoma
  • H40.151 - Residual stage of open-angle glaucoma, right eye
  • H40.152 - Residual stage of open-angle glaucoma, left eye
  • H40.153 - Residual stage of open-angle glaucoma, bilateral
  • H40.159 - Residual stage of open-angle glaucoma, unspecified eye

Clinical Information

  • GLAUCOMA OPEN ANGLE-. glaucoma in which the angle of the anterior chamber is open and the trabecular meshwork does not encroach on the base of the iris.

Code Classification

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

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)

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