H40.20
Non-billableUnspecified primary angle-closure glaucoma
Unspecified primary angle-closure glaucoma
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury (trauma) of eye and orbit (S05.-)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)
7th Character Definitions
- 0 - stage unspecified
- 1 - mild stage
- 2 - moderate stage
- 3 - severe stage
- 4 - indeterminate stage
Child Codes (5)
H40.20X0Unsp primary angle-closure glaucoma, stage unspecified
H40.20X1Unspecified primary angle-closure glaucoma, mild stage
H40.20X2Unspecified primary angle-closure glaucoma, moderate stage
H40.20X3Unspecified primary angle-closure glaucoma, severe stage
H40.20X4Unsp primary angle-closure glaucoma, indeterminate stage
Also Known As / Clinical Terms
Frequently Asked Questions
What is the ICD-10 code for unspecified primary angle-closure glaucoma?
The ICD-10-CM code for unspecified primary angle-closure glaucoma is H40.20. The full clinical description is "Unspecified primary angle-closure glaucoma". H40.20 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code H40.20 mean?
ICD-10-CM code H40.20 represents "Unspecified primary angle-closure glaucoma". It is classified under Chapter 7: Diseases of the Eye and Adnexa and is a non-billable header code. Use a more specific child code for billing purposes.
Is H40.20 a billable code?
No, H40.20 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 5 child codes under H40.20.
What chapter is H40.20 in?
H40.20 is in Chapter 7: Diseases of the Eye and Adnexa (codes H00-H59).
What codes cannot be used with H40.20?
H40.20 has Excludes1 notes indicating codes that cannot be used together with it, including: absolute glaucoma (H44.51-); congenital glaucoma (Q15.0); traumatic glaucoma due to birth injury (P15.3); and 2 more.
What are the subcategories under H40.20?
H40.20 has 5 child codes, including: H40.20X0 (Unsp primary angle-closure glaucoma, stage unspecified), H40.20X1 (Unspecified primary angle-closure glaucoma, mild stage), H40.20X2 (Unspecified primary angle-closure glaucoma, moderate stage), H40.20X3 (Unspecified primary angle-closure glaucoma, severe stage), and 1 more.
What are the UMLS CUIs for H40.20?
H40.20 is linked to 1 UMLS Concept Unique Identifier: C0017606. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.