2027 ICD-10-CM Diagnosis Code H32Chorioretinal disorders in diseases classified elsewhere
ICD-10-CM Codes›H00–H59›H30-H36›H32
- Billable — Valid for Submission
- Chronic Condition
H32 is a billable ICD-10-CM diagnosis code for chorioretinal disorders in diseases classified elsewhere. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 124 through 125. The code is a manifestation code that cannot be reported as the principal diagnosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Retinal and vitreous conditions.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for H32.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- African histoplasmosis
- Cryptococcal choroiditis
- Cytomegaloviral retinitis
- Fungal choroiditis
- Histo spot
- Histoplasma capsulatum with retinitis
- Histoplasma duboisii with retinitis
- Histoplasmosis with retinitis
- Inflammation of retina due to chronic kidney disease stage 5
- Ocular cryptococcosis
- Ocular histoplasmosis syndrome
- Parasitic choroiditis
- Renal retinopathy
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to H32: its own notes plus those printed at Chapter 7. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- 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)
Code First
The underlying condition named in the note is sequenced before this code.
Notes
General instructions on how these codes are used.
- Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name H32, its category, or a range that includes it.
Use Additional Code 1
These codes say to use an additional code from the note, and H32 is one of the codes named.
- B39 Histoplasmosisretinitis (H32)
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Eye Diseases
Even if your eyes feel healthy, you could have a problem and not know it. That's why regular eye exams are so important. Refractive errors are the most common type of vision problem that makes it hard to see clearly. But some eye conditions or diseases don't have any symptoms and can lead to a permanent loss of vision.
The full article covers:
- What diseases can affect the eye?
- What are the symptoms of eye diseases?
- Who is more likely to develop eye diseases?
- What are the treatments for eye diseases?
- Can eye diseases be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert H32 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About H32Overview
What is the ICD-10 code for chorioretinal disorders in diseases classified elsewhere?
The ICD-10-CM code for chorioretinal disorders in diseases classified elsewhere is H32. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is H32 (Chorioretinal disorders in diseases classified elsewhere) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report chorioretinal disorders in diseases classified elsewhere on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does H32 group to?
On inpatient claims, chorioretinal disorders in diseases classified elsewhere maps to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.
Can H32 be a principal diagnosis?
No. This is a manifestation code: chorioretinal disorders in diseases classified elsewhere describes the manifestation of an underlying disease rather than the disease itself, so the underlying condition is sequenced first.
Can H32 be reported with B58.01?
Not as a rule. The Excludes1 note on H32 lists "toxoplasmosis (acquired) (B58.01)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
