ICD-10 Code
International Classification of Diseases, 10th Revision
Dec 14, 2018

Get details on any valid ICD 10 (Clinical Modification) diagnosis code. Enter the complete ICD 10 code below to validate and view the corresponding details of that code. Perform a reverse ICD 10 code lookup on any valid ICD 10 diagnosis code. Browse ICD 10 diagnosis (Clinical Modification) codes.

ICD 10 Code H40.20X1
Unspecified primary angle-closure glaucoma, mild stage

H40.20X1 is a valid1 ICD 10 diagnosis code.
H40.20X1 is valid for submission for HIPAA-covered transactions.

— Identified with “1” for mild stage

1 See below for any additional coding requirements.

* Check for any notations, inclusions and/or exclusions that is specific to this ICD 10 code before using
One of the following 7th characters is to be assigned to code H40.20 to designate the stage of glaucoma
1 The appropriate 7th character is to be added along with any placeholders (X) necessary to establish a 7-digit ICD 10 code.
  • H40.20X0 - Unspecified primary angle-closure glaucoma
    Use this code for stage unspecified
  • H40.20X1 - Unspecified primary angle-closure glaucoma
    Use this code for mild stage
  • H40.20X2 - Unspecified primary angle-closure glaucoma
    Use this code for moderate stage
  • H40.20X3 - Unspecified primary angle-closure glaucoma
    Use this code for severe stage
  • H40.20X4 - Unspecified primary angle-closure glaucoma
    Use this code for indeterminate stage

See also
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When ICD 10 was implemented on October 1, 2015, it did not affect physicians', outpatient facilities', and hospital outpatient departments' use of CPT codes on Medicare Fee-For-Service claims. Providers should continue to use CPT codes to report these services.