2021

  1. ICD-10-CM Codes
    2. ›
  2. H00-H59 Diseases of the eye and adnexa
    3. ›
  3. H15-H22 Disorders of sclera, cornea, iris and ciliary body
    4. ›
  4. H20- Iridocyclitis
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code H20.0

2021 ICD-10-CM Diagnosis Code H20.0

Acute and subacute iridocyclitis

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • H20.0 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM H20.0 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of H20.0 - other international versions of ICD-10 H20.0 may differ.
Applicable To
  • Acute anterior uveitis
  • Acute cyclitis
  • Acute iritis
  • Subacute anterior uveitis
  • Subacute cyclitis
  • Subacute iritis
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as H20.0. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • iridocyclitis, iritis, uveitis (due to) (in) diabetes mellitus (E08-E13
    ICD-10-CM Range E08-E13

    Diabetes mellitus

    • E08 Diabetes mellitus due to underlying cond...
    • E09 Drug or chemical induced diabetes mellit...
    • E10 Type 1 diabetes mellitus
    • E11 Type 2 diabetes mellitus
    • E13 Other specified diabetes mellitus
    with .39)
  • iridocyclitis, iritis, uveitis (due to) (in) diphtheria (
    ICD-10-CM Diagnosis Code A36.89

    Other diphtheritic complications

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Diphtheritic peritonitis
    A36.89
    )
  • iridocyclitis, iritis, uveitis (due to) (in) gonococcal (
    ICD-10-CM Diagnosis Code A54.32

    Gonococcal iridocyclitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    A54.32
    )
  • iridocyclitis, iritis, uveitis (due to) (in) herpes (simplex) (
    ICD-10-CM Diagnosis Code B00.51

    Herpesviral iridocyclitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Herpesviral iritis
    • Herpesviral uveitis, anterior
    B00.51
    )
  • iridocyclitis, iritis, uveitis (due to) (in) herpes zoster (
    ICD-10-CM Diagnosis Code B02.32

    Zoster iridocyclitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    B02.32
    )
  • iridocyclitis, iritis, uveitis (due to) (in) late congenital syphilis (
    ICD-10-CM Diagnosis Code A50.39

    Other late congenital syphilitic oculopathy

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    A50.39
    )
  • iridocyclitis, iritis, uveitis (due to) (in) late syphilis (
    ICD-10-CM Diagnosis Code A52.71

    Late syphilitic oculopathy

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Late syphilitic chorioretinitis
    • Late syphilitic episcleritis
    A52.71
    )
  • iridocyclitis, iritis, uveitis (due to) (in) sarcoidosis (
    ICD-10-CM Diagnosis Code D86.83

    Sarcoid iridocyclitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    D86.83
    )
  • iridocyclitis, iritis, uveitis (due to) (in) syphilis (
    ICD-10-CM Diagnosis Code A51.43

    Secondary syphilitic oculopathy

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Secondary syphilitic chorioretinitis
    • Secondary syphilitic iridocyclitis, iritis
    • Secondary syphilitic uveitis
    A51.43
    )
  • iridocyclitis, iritis, uveitis (due to) (in) toxoplasmosis (
    ICD-10-CM Diagnosis Code B58.09

    Other toxoplasma oculopathy

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Toxoplasma uveitis
    B58.09
    )
  • iridocyclitis, iritis, uveitis (due to) (in) tuberculosis (
    ICD-10-CM Diagnosis Code A18.54

    Tuberculous iridocyclitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    A18.54
    )
The following code(s) above H20.0 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 H20.0:
  • H00-H59
    2021 ICD-10-CM Range H00-H59

    Diseases of the eye and adnexa

    Note
    • 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
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

Diagnosis Index entries containing back-references to H20.0:
  • Iridocyclitis H20.9
    ICD-10-CM Diagnosis Code H20.9

    Unspecified iridocyclitis

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Uveitis NOS

ICD-10-CM Codes Adjacent To H20.0
H18.832 …… left eye
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

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

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