Crystal's MCW Coder Hub🧬ICD-10-CM H30.103 — Unspecified Disseminated Chorioretinal Inflammation, Bilateral
Quick Reference
Code: H30.103 | Billable: Yes | Chapter: 7 — Eye and Adnexa | HCC: Yes | Bilateral: Both eyes affected
Description
ICD-10 CM H30.103 represents unspecified disseminated chorioretinal inflammation affecting both eyes simultaneously. Disseminated chorioretinitis involves multifocal or widespread inflammatory lesions of the choroid and retina as opposed to focal disease (H30.0-). The “unspecified” designation indicates that the precise anatomical distribution (posterior pole, peripheral, or generalized) has not been further documented, or that the pattern does not fit neatly into a more specific subcategory. The bilateral qualifier (third character “3”) confirms that both eyes are actively involved.
Clinically, disseminated chorioretinal inflammation may present with multiple white-yellow inflammatory foci scattered across the fundus, vitreous cells and haze, retinal vasculitis, serous retinal detachment, and variable vision loss. Etiologies span infectious (toxoplasmosis, tuberculosis, histoplasmosis, CMV, herpes), autoimmune (sarcoidosis, Vogt-Koyanagi-Harada), and idiopathic categories.
Code Structure & Hierarchy
Code Tree
- Chapter: 7 — Diseases of the Eye and Adnexa (H00-H59)
- Block: H30-H36 — Disorders of Choroid and Retina
- Category: H30 — Chorioretinal inflammation
- H30.0 — Focal chorioretinal inflammation
- H30.1 — Disseminated chorioretinal inflammation ← this branch
- H30.10 — Unspecified disseminated chorioretinal inflammation
- H30.11 — Disseminated, posterior pole
- H30.12 — Disseminated, peripheral
- H30.13 — Disseminated, generalized
- H30.14 — Acute posterior multifocal placoid pigment epitheliopathy (APMPPE)
- H30.2 — Posterior cyclitis
- H30.8 — Other chorioretinal inflammations (incl. H30.813 Harada’s disease, bilateral)
- H30.9 — Unspecified chorioretinal inflammation
Laterality Within H30.10
Instructional Notes
Excludes1 — Mutually Exclusive
The following conditions cannot be coded together with H30.103 under any circumstance:
- Exudative retinopathy (H35.02-) — if exudative retinopathy is the confirmed diagnosis, it replaces this code
Excludes2 — Not Included Here, May Co-exist
Use Additional Code
When an infectious etiology is identified, always code the underlying organism or infection in addition to H30.103:
Code First
No mandatory code-first instruction for H30.103. However, sequencing depends on setting and reason for encounter — see Coding Guidelines below.
Clinical Description
Disseminated chorioretinal inflammation is an inflammatory process involving multiple foci throughout the choroid and retina bilaterally. The choroid, the highly vascular layer between the retina and sclera, serves as the primary site of hematogenous dissemination of infectious organisms and as a target for immune-mediated inflammation. The retina becomes secondarily involved through direct extension or vascular compromise.
Typical clinical features include:
- Multiple cream-white or yellow-gray chorioretinal lesions at varying stages of activity and healing
- Vitreous inflammation (cells, haze, snowballs or snowbanking in pars planitis variants)
- Retinal vascular sheathing or occlusion in vasculitic forms
- Serous or exudative retinal detachment in severe disease
- Disc edema or hyperemia
- Bilateral symmetry is common in autoimmune or hematogenous infectious etiologies
Common etiologies to consider and document for specificity:
- Infectious: Ocular toxoplasmosis (most common worldwide), ocular tuberculosis, ocular histoplasmosis syndrome, CMV retinitis (immunocompromised), acute retinal necrosis (herpes family)
- Autoimmune/Inflammatory: Sarcoidosis, Vogt-Koyanagi-Harada (VKH) disease, birdshot chorioretinopathy, sympathetic ophthalmia
- Idiopathic/Syndromic: APMPPE (H30.143), multifocal choroiditis, punctate inner choroidopathy (PIC)
Coding Guidelines
Official Guideline Reference
ICD-10-CM Official Guidelines FY2025, Section I.C.7 — Diseases of the Eye and Adnexa
- Assign codes from Chapter 7 for conditions affecting the eye and adnexa. When an etiology from another chapter causes the ocular condition, follow etiology-manifestation sequencing conventions.
- Laterality must be coded to the highest level of specificity supported by documentation. Do not default to “unspecified eye” (H30.109) when laterality is documented.
- The “unspecified” subtype (H30.10x) should only be used when the distribution of disseminated inflammation (posterior pole, peripheral, generalized) is not documented and cannot be determined from the record.
Sequencing Tips
- Outpatient — First-listed diagnosis: Use H30.103 when chorioretinal inflammation is the reason for the encounter. If an infectious etiology is confirmed, sequence the infection code first (e.g., B58.01) with H30.103 as an additional code — per etiology-manifestation convention.
- Inpatient — Principal diagnosis: The condition established after study to be chiefly responsible for admission. If the patient is admitted to evaluate and treat bilateral chorioretinitis of unknown etiology, H30.103 may be the PDx. If the etiology is confirmed during the stay (e.g., toxoplasmosis), re-sequence accordingly.
- POA indicator: Typically Y (present on admission) for chronic or subacute inflammatory conditions. W (clinically undetermined) is appropriate when onset relative to admission cannot be established.
HCC Mapping
HCC Risk Adjustment
HCC Relevant: Yes HCC Model: CMS-HCC v28 HCC Category: Category 124 — Exudative Macular Degeneration and Other Retinal Disorders HCC Coefficient: 0.191 Risk Adjustment Impact: Moderate
A coefficient of 0.191 adds approximately 1,000 of base rate to the annual risk score per beneficiary — meaningful for a Medicare Advantage population with chronic posterior uveitis.
HCC Capture Tips
- H30.103 must be documented and coded at every encounter where the condition is actively managed — chronic conditions require annual recapture for continuous HCC credit under MA risk adjustment
- If an infectious etiology is confirmed, the underlying disease code (e.g., B58.01) may carry additional or separate HCC weight — ensure both are coded
- CDI opportunity: If the inflammation is secondary to sarcoidosis (D86.83), VKH (H30.813), or tuberculosis (A18.53), those codes may carry their own HCC mapping — specificity of the root cause directly impacts total RAF score
- Avoid defaulting to H30.109 (unspecified eye) or H30.90 (unspecified chorioretinal inflammation) — unspecified codes may not map to the same HCC category and reduce RAF accuracy
MS-DRG Mapping
DRG Assignment
MS-DRG Description MDC GMLOS 124 Other Disorders of the Eye with MCC MDC 2 4.6 125 Other Disorders of the Eye with CC or without CC/MCC MDC 2 3.1
CC/MCC Status
- CC status: Yes — H30.103 qualifies as a CC when present as a secondary diagnosis, potentially upgrading DRG from 125 to 124 when combined with an MCC on a qualifying principal diagnosis
- MCC status: No
- HAC designation: No
- POA exempt: No — POA indicator required; condition must be POA=Y to function as a CC for DRG purposes under HAC/POA rules
CPT Crosswalk
| CPT | Description |
|---|---|
| 67027 | Implantation of intravitreal drug delivery system (e.g., fluocinolone for chronic uveitis) |
| 67028 | Intravitreal injection of pharmacologic agent (e.g., anti-VEGF, steroid) |
| 67036 | Vitrectomy, mechanical, pars plana approach |
| 67210 | Destruction of localized lesion of retina |
| 67220 | Destruction of localized lesion of choroid (e.g., photocoagulation) |
| 92225 | Ophthalmoscopy, extended, with retinal drawing, initial |
| 92226 | Ophthalmoscopy, extended, with retinal drawing, subsequent |
| 92250 | Fundus photography with interpretation and report |
ICD-10-PCS Crosswalk
PCS Applicability
ICD-10-PCS applies in the inpatient setting only. Procedures performed to treat H30.103 in the inpatient setting may include vitrectomy or intravitreal device implantation.
| PCS Code | Root Operation | Body Part | Approach | Device | Qualifier |
|---|---|---|---|---|---|
| 08H63KZ | Insertion | Vitreous, Right | Percutaneous | Synthetic Substitute | No Qualifier |
| 08H64KZ | Insertion | Vitreous, Left | Percutaneous | Synthetic Substitute | No Qualifier |
| 08B33ZZ | Excision | Vitreous, Right | Percutaneous | No Device | No Qualifier |
| 08B34ZZ | Excision | Vitreous, Left | Percutaneous | No Device | No Qualifier |
ICD-10-CM Crosswalk
| Code | Description | Relationship |
|---|---|---|
| H30.101 | Unsp disseminated chorioretinal inflammation, right eye | Unilateral equivalent |
| H30.102 | Unsp disseminated chorioretinal inflammation, left eye | Unilateral equivalent |
| H30.113 | Disseminated chorioretinal inflammation, posterior pole, bilateral | More specific — posterior pole |
| H30.123 | Disseminated chorioretinal inflammation, peripheral, bilateral | More specific — peripheral |
| H30.133 | Disseminated chorioretinal inflammation, generalized, bilateral | More specific — generalized |
| H30.143 | APMPPE, bilateral | Specific syndromic subtype |
| H30.813 | Harada’s disease, bilateral | VKH — specific autoimmune subtype |
| H20.013 | Primary iridocyclitis, bilateral | Associated anterior uveitis |
| B58.01 | Toxoplasma chorioretinitis | Infectious etiology — use additional |
| A18.53 | Tuberculous chorioretinitis | Infectious etiology — use additional |
| B00.51 | Herpes simplex iridocyclitis | Infectious etiology — use additional |
| D86.83 | Sarcoid chorioretinitis | Autoimmune etiology — use additional |
Coding Examples
Example 1 — Bilateral Uveitis with Toxoplasmosis, Outpatient
Scenario: A 34-year-old immunocompetent patient presents to ophthalmology clinic with bilateral blurry vision, floaters, and photophobia for 3 weeks. Fundus exam reveals multiple white-yellow chorioretinal lesions bilaterally with overlying vitreous haze. Serology confirms active toxoplasmosis. Setting: Outpatient ophthalmology. First-listed Dx: B58.01 — Toxoplasma chorioretinitis (etiology sequenced first per etiology-manifestation convention) Additional Dx: H30.103 — Unspecified disseminated chorioretinal inflammation, bilateral (manifestation) CPT: 92225 — Extended ophthalmoscopy with drawing, initial; 92250 — Fundus photography POA: N/A (outpatient) Notes: Sequence B58.01 first because a confirmed infectious etiology drives the inflammation. H30.103 is the ocular manifestation. Both must be coded for complete clinical picture.
Example 2 — Bilateral Chorioretinitis, Etiology Unknown, Inpatient Admission
Scenario: A 58-year-old Medicare patient is admitted for bilateral vision loss and severe vitreous inflammation. Extensive workup during admission (chest CT, lab panel, aqueous tap) is inconclusive. Discharge diagnosis is bilateral disseminated chorioretinal inflammation, etiology undetermined. Vitreoretinal surgeon performs bilateral diagnostic vitrectomy. Principal Dx: H30.103 — Unspecified disseminated chorioretinal inflammation, bilateral Secondary Dx: H53.139 — Sudden visual loss, unspecified eye (POA = Y) PCS: 08B33ZZ, 08B34ZZ — Excision of vitreous, right and left eye, percutaneous (vitrectomy) POA: Y DRG: 124 — Other Disorders of the Eye with MCC (if MCC present) or 125 Notes: When etiology is not confirmed during the inpatient stay, H30.103 remains the PDx. If etiology is later confirmed, an amended record query may be appropriate.
Example 3 — Chronic Bilateral Chorioretinal Inflammation, Fluocinolone Implant Follow-up, Outpatient
Scenario: Established patient with chronic bilateral non-infectious posterior uveitis (disseminated chorioretinal inflammation). Patient is seen in follow-up after bilateral Retisert® implantation (67027). Physician performs extended ophthalmoscopy and fundus photography. Inflammation is stable bilaterally. First-listed Dx: H30.103 — Unspecified disseminated chorioretinal inflammation, bilateral Additional Dx: Z96.89 — Presence of other specified functional implants (to document implant status) CPT: 92226 — Extended ophthalmoscopy, subsequent; 92250 — Fundus photography Notes: At a follow-up encounter, H30.103 remains the primary reason for the visit even if the condition is stable — “monitoring of a known condition” is still coded to the condition itself in the outpatient setting. Link to 67027 note for cross-reference.
Coding Pitfalls & Tips
Common Errors
- Using H30.109 (unspecified eye) when the record clearly documents bilateral involvement — always assign H30.103 when both eyes are affected
- Failing to code the underlying infectious or systemic etiology — H30.103 alone does not tell the full clinical story and leaves HCC weight on the table
- Using H30.103 when a more specific disseminated subtype is documented (posterior pole → H30.113, peripheral → H30.123, generalized → H30.133) — query the provider if the distribution is noted in the exam but not in the assessment
- Coding H20.013 (iridocyclitis) and H30.103 together without confirming they represent distinct conditions — panuveitis involves both, but careful review is needed to avoid duplicate coding of the same inflammatory episode
- Missing the “use additional code” instruction for infectious etiologies — results in incomplete coding and missed risk capture
Pro Tips
- Fundus photos and fluorescein angiography reports often contain the anatomical distribution of lesions — use this to determine if H30.11x (posterior pole), H30.12x (peripheral), or H30.13x (generalized) is more appropriate before defaulting to H30.10x (unspecified)
- When the etiology is under investigation, H30.103 is appropriate as a working code — update at subsequent encounters as specificity is established
- For annual wellness or chronic care management encounters, always capture H30.103 if the patient is still being actively managed — HCC recapture requires the code to appear every data collection year
- VKH disease (H30.813) and APMPPE (H30.143) are specific syndromic forms — if these are diagnosed, use the more specific code, not H30.103
CDI Query Opportunities
CDI Flags
- Etiology specificity: Is the underlying cause of the chorioretinal inflammation documented? Infectious (toxoplasmosis, TB, herpes, histoplasmosis, CMV)? Autoimmune (sarcoidosis, VKH, birdshot)? Idiopathic? — Each carries different coding, sequencing, and HCC implications
- Anatomical distribution: Does the fundus exam or imaging describe the location of lesions (posterior pole, peripheral, generalized)? If yes, a more specific H30.1x subcode may apply — query provider before defaulting to “unspecified”
- Laterality confirmation: Is bilateral involvement actively present at this encounter, or is one eye in remission? Bilateral coding (H30.103) requires active bilateral disease at the time of the encounter
- Infectious organism documentation: If cultures, serology, or PCR results suggest an organism, ensure the provider formally documents the linkage between the infection and the chorioretinal inflammation in the assessment
- Associated conditions: Is anterior uveitis (H20.013) also present (panuveitis)? Is there cystoid macular edema (H35.81-)? Retinal detachment (H33.-)? Glaucoma secondary to uveitis (H40.4-)? — Each is separately reportable and may carry CC/MCC or HCC value
- HCC recapture: Is this a chronic condition in a Medicare Advantage patient? Confirm it is coded at every encounter — not just the initial diagnosis visit
Related Codes
- Laterality family: H30.101, H30.102, H30.109
- More specific disseminated subtypes: H30.113, H30.123, H30.133, H30.143
- Syndromic subtypes: H30.813 (Harada’s / VKH)
- Infectious etiologies: B58.01, A18.53, B00.51, B39.9, D86.83
- Associated ocular conditions: H20.013, H35.813, H33.003, H40.413
- CPT crosswalk: 67027, 67028, 92225, 92226, 92250
- PCS crosswalk: 08H63KZ, 08H64KZ, 08B33ZZ, 08B34ZZ
Sources
ICD-10-CM Official Guidelines for Coding and Reporting FY2025. CMS/NCHS. ICD-10-CM Tabular List of Diseases and Injuries FY2025. CMS. ICD-10-CM Alphabetic Index FY2025. CMS. CMS MS-DRG Definitions Manual v42. Centers for Medicare & Medicaid Services. CMS-HCC Risk Adjustment Model v28 Coefficients and Category Mappings. CMS, 2024. AHA Coding Clinic for ICD-10-CM/PCS. American Hospital Association. AAO Coding Coach: Ophthalmology ICD-10-CM Reference 2025. American Academy of Ophthalmology. Bhagat N, Goldberg MF, et al. Posterior uveitis: etiologies and diagnostic approach. Ophthalmology Clinics of North America.