2027 ICD-10-CM Diagnosis Code H31.8Other specified disorders of choroid
ICD-10-CM Codes›H00–H59›H30-H36›H31
- Billable — Valid for Submission
- Chronic Condition
H31.8 is a billable ICD-10-CM diagnosis code for other specified disorders of choroid. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Retinal and vitreous conditions.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abnormality of pigmentation of choroid and retina
- Acquired hypopigmentation of choroid
- Bilateral choroidal folds of eyes
- Bilateral neovascularization of choroid of eye
- Central serous choroidopathy of bilateral eyes
- Central serous choroidopathy of left eye
- Central serous choroidopathy of right eye
- Chorioretinal vascular disorder
- Choroid tubercles
- Choroidal fold
- Choroidal fold of left eye
- Choroidal fold of right eye
- Choroidal infarct
- Choroidal pigmentation
- Diffuse chorioretinal lesion
- Flat chorioretinal lesion
- Focal chorioretinal lesion
- General disseminated chorioretinitis
- Generalized disseminated choroiditis
- Generalized disseminated choroiditis AND chorioretinitis
- Generalized disseminated choroiditis AND chorioretinitis with acute necrosis
- Hyperpigmentation of choroid and retina
- Hypertensive choroidopathy
- Hypopigmentation of choroid and retina
- Idiopathic choroidal fold of bilateral eyes
- Idiopathic choroidal fold of left eye
- Idiopathic choroidal fold of right eye
- Idiopathic choroidal neovascular membrane
- Idiopathic fold of choroid of eye
- Idiopathic polypoidal choroidal vasculopathy
- Microcephalus, lymphedema, chorioretinopathy syndrome
- Multiple raised chorioretinal lesions
- Neovascularization of choroid of left eye
- Neovascularization of choroid of right eye
- Occult neovascularization of macula
- Pachychoroid neovasculopathy
- Polypoidal choroidal vasculopathy
- Polypoidal neovascularization of choroid of bilateral eyes
- Polypoidal neovascularization of choroid of eye
- Polypoidal neovascularization of choroid of left eye
- Polypoidal neovascularization of choroid of right eye
- Punched out chorioretinal lesion
- Solitary raised chorioretinal lesion
- Subfoveal choroidal neovascular membrane
- Tigroid fundus
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to H31.8: its own notes plus those printed at Chapter 7. A note printed at a category, block or chapter applies to every code under it.
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)
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 H31.8, its category, or a range that includes it.
Use Additional Code 1
These codes say to use an additional code from the note, and H31.8 is one of the codes named.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disease, diseased See Also: Syndrome;
specified NEC H31.8
Disorder (of) See Also: Disease;
specified type NEC H31.8
Sclerochoroiditis H31.8
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Eye Diseases
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Read the full article at MedlinePlus
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Convert H31.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About H31.8Overview
What is the ICD-10 code for other specified disorders of choroid?
The ICD-10-CM code for other specified disorders of choroid is H31.8 (sometimes written as H318). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is H31.8 (Other disorders of choroid) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other specified disorders of choroid on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does H31.8 group to?
When other specified disorders of choroid is the principal diagnosis on an inpatient stay, it groups to MS-DRG 125, 124, with relative weights from 0.7699 to 1.2470 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of H31.8?
Under the General Equivalence Mappings, other specified disorders of choroid converts to ICD-9-CM 363.8 (disorders of choroid NEC). The mapping is approximate, so confirm the match fits the documentation.
