H20.0
Non-billableAcute and subacute iridocyclitis
Acute and subacute iridocyclitis
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Acute anterior uveitis
- Acute cyclitis
- Acute iritis
- Subacute anterior uveitis
- Subacute cyclitis
- Subacute iritis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •iridocyclitis, iritis, uveitis (due to) (in) diabetes mellitus with .39)E08-E13
- •iridocyclitis, iritis, uveitis (due to) (in) diphtheriaA36.89
- •iridocyclitis, iritis, uveitis (due to) (in) gonococcalA54.32
- •iridocyclitis, iritis, uveitis (due to) (in) herpes (simplex)B00.51
- •iridocyclitis, iritis, uveitis (due to) (in) herpes zosterB02.32
- •iridocyclitis, iritis, uveitis (due to) (in) late congenital syphilisA50.39
- •iridocyclitis, iritis, uveitis (due to) (in) late syphilisA52.71
- •iridocyclitis, iritis, uveitis (due to) (in) sarcoidosisD86.83
- •iridocyclitis, iritis, uveitis (due to) (in) syphilisA51.43
- •iridocyclitis, iritis, uveitis (due to) (in) toxoplasmosisB58.09
- •iridocyclitis, iritis, uveitis (due to) (in) tuberculosisA18.54
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations, and chromosomal abnormalitiesQ00-Q99
- •diabetes mellitus related eye conditions, , ,E09.3, E10.3, E11.3, E13.3
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury (trauma) of eye and orbitS05
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •syphilis related eye disorders, , ,A50.01, A50.3, A51.43, A52.71
Child Codes (6)
Related Codes(4)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(18)
UMLS
- AAU - acute anterior uveitisC0701807
- Acute Anterior UveitisC0701807
- Acute anterior uveitisC0701807
- Acute anterior uveitis (disorder)C0701807
- acute anterior uveitisC0701807
- anterior uveitisC0701807
- Acute and subacute iridocyclitisC0154908
- Unspecified acute and subacute iridocyclitisC0154908
- Acute cyclitisC1455748
- Acute cyclitis (disorder)C1455748
- Acute iritisC0271105
- Acute iritis (disorder)C0271105
- Subacute anterior uveitisC0271102
- Subacute anterior uveitis (disorder)C0271102
- Subacute cyclitisC0271104
- Subacute cyclitis (disorder)C0271104
- Subacute iritisC0271106
- Subacute iritis (disorder)C0271106
Frequently Asked Questions
What is the ICD-10 code for acute and subacute iridocyclitis?
The ICD-10-CM code for acute and subacute iridocyclitis is H20.0. The full clinical description is "Acute and subacute iridocyclitis". H20.0 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code H20.0 mean?
ICD-10-CM code H20.0 represents “Acute and subacute iridocyclitis”. 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 H20.0 a billable code?
No, H20.0 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 6 child codes under H20.0.
What chapter is H20.0 in?
H20.0 is in Chapter 7: Diseases of the Eye and Adnexa (codes H00-H59).
What codes cannot be used with H20.0?
H20.0 has Excludes1 notes indicating codes that cannot be used together with it, including: iridocyclitis, iritis, uveitis (due to) (in) diabetes mellitus (E08-E13 with .39); iridocyclitis, iritis, uveitis (due to) (in) diphtheria (A36.89); iridocyclitis, iritis, uveitis (due to) (in) gonococcal (A54.32); and 8 more.
What are the subcategories under H20.0?
H20.0 has 6 child codes, including: H20.00 (Unspecified acute and subacute iridocyclitis), H20.01 (Primary iridocyclitis), H20.02 (Recurrent acute iridocyclitis), H20.03 (Secondary infectious iridocyclitis), and 2 more.
What are the UMLS CUIs for H20.0?
H20.0 is linked to 7 UMLS Concept Unique Identifiers: C0701807, C0154908, C1455748, C0271105, C0271102, and 2 more. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does H20.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like acute and subacute iridocyclitis affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of H20.0?
H20.0 maps to the ICD-11 code: 9A96.Z (Anterior uveitis, unspecified).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
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.