2022 ICD-10-CM Diagnosis Code H20.00

Unspecified acute and subacute iridocyclitis

    2016 2017 2018 2019 2020 2021 2022 Billable/Specific Code
  • H20.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2022 edition of ICD-10-CM H20.00 became effective on October 1, 2021.
  • This is the American ICD-10-CM version of H20.00 - other international versions of ICD-10 H20.00 may differ.
The following code(s) above H20.00 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to H20.00:
  • H00-H59
    2022 ICD-10-CM Range H00-H59

    Diseases of the eye and adnexa

    • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
    Type 2 Excludes
    • 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)
    Diseases of the eye and adnexa
  • H20.0
    ICD-10-CM Diagnosis Code H20.0

    Acute and subacute iridocyclitis

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Applicable To
    • Acute anterior uveitis
    • Acute cyclitis
    • Acute iritis
    • Subacute anterior uveitis
    • Subacute cyclitis
    • Subacute iritis
    Type 1 Excludes
    • 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)
    • iridocyclitis, iritis, uveitis (due to) (in) herpes (simplex) (B00.51)
    • iridocyclitis, iritis, uveitis (due to) (in) herpes zoster (B02.32)
    • iridocyclitis, iritis, uveitis (due to) (in) late congenital syphilis (A50.39)
    • iridocyclitis, iritis, uveitis (due to) (in) late syphilis (A52.71)
    • iridocyclitis, iritis, uveitis (due to) (in) sarcoidosis (D86.83)
    • iridocyclitis, iritis, uveitis (due to) (in) syphilis (A51.43)
    • iridocyclitis, iritis, uveitis (due to) (in) toxoplasmosis (B58.09)
    • iridocyclitis, iritis, uveitis (due to) (in) tuberculosis (A18.54)
    Acute and subacute iridocyclitis
Approximate Synonyms
  • Acute and subacute iridocyclitis
  • Acute anterior uveitis
  • Acute iridocyclitis
  • Acute iridocyclitis, both eyes
  • Acute iritis
  • Acute iritis, both eyes
  • Bilateral acute anterior uveitis
  • Bilateral acute iritis
  • Bilateral subacute iridocyclitis
  • L subacute iridocyclitis
  • Left acute anterior uveitis
  • Left acute iridocyclitis
  • Left acute iridocyclitis (eye condition)
  • Left acute iritis
  • Left acute iritis (eye condition)
  • R subacute iridocyclitis
  • Right acute anterior uveitis
  • Right acute iridocyclitis
  • Right acute iritis
  • Right acute iritis (eye condition)
  • Subacute iridocyclitis of bilateral eyes
  • Subacute iridocyclitis of left eye
  • Subacute iridocyclitis of right eye
ICD-10-CM H20.00 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 124 Other disorders of the eye with mcc
  • 125 Other disorders of the eye without mcc

Convert H20.00 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
ICD-10-CM Codes Adjacent To H20.00
H18.833 …… bilateral
H18.839 …… unspecified eye
H18.89 Other specified disorders of cornea
H18.891 …… right eye
H18.892 …… left eye
H18.893 …… bilateral
H18.899 …… unspecified eye
H18.9 Unspecified disorder of cornea
H20 Iridocyclitis
H20.0 Acute and subacute iridocyclitis
H20.00 Unspecified acute and subacute iridocyclitis
H20.01 Primary iridocyclitis
H20.011 …… right eye
H20.012 …… left eye
H20.013 …… bilateral
H20.019 …… unspecified eye
H20.02 Recurrent acute iridocyclitis
H20.021 …… right eye
H20.022 …… left eye
H20.023 …… bilateral
H20.029 …… unspecified eye

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.