2023 ICD-10-CM Diagnosis Code H32

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Chorioretinal disorders in diseases classified elsewhere

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Manifestation Code
  • H32 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM H32 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of H32 - other international versions of ICD-10 H32 may differ.
ICD-10-CM Coding Rules
  • H32 describes the manifestation of an underlying disease, not the disease itself.
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying disease, such as:
  • congenital toxoplasmosis (
    ICD-10-CM Diagnosis Code P37.1

    Congenital toxoplasmosis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Hydrocephalus due to congenital toxoplasmosis
  • histoplasmosis (
    ICD-10-CM Diagnosis Code B39
    • B39 Histoplasmosis
      • B39.0 Acute pulmonary histoplasmosis capsulati
      • B39.1 Chronic pulmonary histoplasmosis capsulati
      • B39.2 Pulmonary histoplasmosis capsulati, unspecifi...
      • B39.3 Disseminated histoplasmosis capsulati
      • B39.4 Histoplasmosis capsulati, unspecified
      • B39.5 Histoplasmosis duboisii
      • B39.9 Histoplasmosis, unspecified
  • leprosy (
    ICD-10-CM Diagnosis Code A30
    • A30 Leprosy [Hansen's disease]
      • A30.0 Indeterminate leprosy
      • A30.1 Tuberculoid leprosy
      • A30.2 Borderline tuberculoid leprosy
      • A30.3 Borderline leprosy
      • A30.4 Borderline lepromatous leprosy
      • A30.5 Lepromatous leprosy
      • A30.8 Other forms of leprosy
      • A30.9 Leprosy, unspecified
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 H32. 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.
  • chorioretinitis (in):
  • toxoplasmosis (acquired) (
    ICD-10-CM Diagnosis Code B58.01

    Toxoplasma chorioretinitis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • tuberculosis (
    ICD-10-CM Diagnosis Code A18.53

    Tuberculous chorioretinitis

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
The following code(s) above H32 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 H32:
  • H00-H59
    2023 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
Approximate Synonyms
  • Bilateral cytomegalovirus chorioretinitis
  • Bilateral cytomegalovirus retinitis
  • Bilateral ocular histoplasmosis syndrome
  • Cmv chorioretinitis
  • Cytomegaloviral retinitis
  • Cytomegalovirus chorioretinitis
  • Cytomegalovirus retinitis
  • Histoplasma capsulatum with retinitis
  • Histoplasmosis retinitis
  • Histoplasmosis syndrome of bilateral eyes
  • Histoplasmosis syndrome of left eye
  • Histoplasmosis syndrome of right eye
  • L ocular histoplasmosis syndrome
  • Left cytomegalovirus chorioretinitis
  • Left cytomegalovirus retinitis
  • R ocular histoplasmosis syndrome
  • Right cytomegalovirus chorioretinitis
  • Right cytomegalovirus retinitis
ICD-10-CM H32 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 124 Other disorders of the eye with mcc
  • 125 Other disorders of the eye without mcc

Convert H32 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
  • 2023 (effective 10/1/2022): No change
Code annotations containing back-references to H32:
  • Use Additional: B39
    ICD-10-CM Diagnosis Code B39


      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Code First
    • associated AIDS (B20)
    Use Additional
    • code for any associated manifestations, such as:
    • endocarditis (I39)
    • meningitis (G02)
    • pericarditis (I32)
    • retinitis (H32)
ICD-10-CM Codes Adjacent To H32
H31.412 …… left eye
H31.413 …… bilateral
H31.419 …… unspecified eye
H31.42 Serous choroidal detachment
H31.421 …… right eye
H31.422 …… left eye
H31.423 …… bilateral
H31.429 …… unspecified eye
H31.8 Other specified disorders of choroid
H31.9 Unspecified disorder of choroid
H32 Chorioretinal disorders in diseases classified elsewhere
H33 Retinal detachments and breaks
H33.0 Retinal detachment with retinal break
H33.00 Unspecified retinal detachment with retinal break
H33.001 …… right eye
H33.002 …… left eye
H33.003 …… bilateral
H33.009 …… unspecified eye
H33.01 Retinal detachment with single break
H33.011 …… right eye
H33.012 …… left eye

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