Chorioretinal disorders in diseases classified elsewhere H32- >

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 Billable/Specific Code Code on Newborn Record
    Applicable To
    • Hydrocephalus due to congenital toxoplasmosis
    P37.1
    )
  • 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
    B39.-
    )
  • 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
    A30.-
    )
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 Billable/Specific Code
    B58.01
    )
  • tuberculosis (
    ICD-10-CM Diagnosis Code A18.53

    Tuberculous chorioretinitis

      2016 2017 2018 Billable/Specific Code
    A18.53
    )
Codes