🧬 ICD-10 CM H33.40 — Traction Detachment of Retina, Unspecified Eye

Quick Reference

Code: H33.40 Type: ICD-10-CM Diagnosis Status: ✅ Billable | Valid FY2026 Chapter: H00-H59 — Diseases of the Eye and Adnexa Laterality: Unspecified Eye (5th character = 0) Also Known As: Tractional Retinal Detachment (TRD) | Proliferative Vitreo-Retinopathy with Retinal Detachment HCC Mapped: ❌ No (H33.40 itself) — but etiology codes (e.g., diabetic retinopathy) may carry HCC 122 weight MS-DRG: 124 / 125 / 126 (medical) or 115 / 116 (surgical)

🩺 Clinical Description

Traction retinal detachment (TRD) occurs when fibrovascular or fibrocellular membranes on the vitreoretinal surface exert mechanical traction that physically pulls the neurosensory retina away from the retinal pigment epithelium (RPE).¹ Unlike rhegmatogenous detachment (H33.0x), TRD does not require a full-thickness retinal break to occur — the retina is lifted by external forces rather than by fluid passage through a hole or tear. Unlike serous detachment (H33.2x), the subretinal fluid present in TRD is a direct result of mechanical displacement rather than transudation from abnormal vasculature or inflammation.³

ICDH33.40 is assigned when traction detachment of the retina is documented but the affected eye is not specified in the medical record. This code carries a 5th-character structure for laterality — identical to H33.20 — and should be used only when true laterality is undeterminable from the complete record. As a profee coder reviewing inpatient records, TRD is almost always documented with a specific eye in operative reports, imaging, and retina consultations, making H33.40 a strong CDI query candidate in nearly every scenario.³

The Three Types of Retinal Detachment — At a Glance

Type Break? Mechanism Code Family Most Common Cause
Rhegmatogenous ✅ Yes Liquified vitreous through full-thickness break H33.0x Posterior vitreous detachment, myopia, trauma
Serous / Exudative ❌ No Fluid transudation from abnormal vasculature or RPE H33.2x VKH, malignant HTN, choroidal tumor
Tractional ❌ No (usually) Fibrovascular membranes pull retina from RPE H33.4x ◀ Proliferative diabetic retinopathy, PVR, ROP

Type	Break?	Mechanism	Code Family	Most Common Cause
Rhegmatogenous	✅ Yes	Liquified vitreous through full-thickness break	H33.0x	Posterior vitreous detachment, myopia, trauma
Serous / Exudative	❌ No	Fluid transudation from abnormal vasculature or RPE	H33.2x	VKH, malignant HTN, choroidal tumor
Tractional	❌ No (usually)	Fibrovascular membranes pull retina from RPE	H33.4x ◀	Proliferative diabetic retinopathy, PVR, ROP

Clinical Features & Presentation

Visual loss is typically gradual and progressive, often described as a shadow or curtain encroaching on the visual field — less acute in onset than rhegmatogenous RD²
Fundoscopic findings: Concave-surfaced detachment (vs. convex/bullous surface in serous RD) with taut fibrovascular membranes visible on the retinal surface, often with tented or tent-shaped areas of elevated retina²
The detachment is typically immobile — it does not shift with changes in patient positioning (unlike serous RD), due to the mechanical attachment of the traction membranes²
No retinal break is present on examination in pure TRD — if a break develops due to continued traction, the case becomes a combined tractional-rhegmatogenous detachment (H33.4x + appropriate H33.0x, or reclassified)
B-scan ultrasonography reveals the characteristic tented, angulated configuration of the detachment; highly echogenic fibrovascular membranes may be visible
Optical coherence tomography (OCT) and wide-field imaging are essential for mapping the extent of traction and macular involvement — macula-off TRD is a surgical emergency
Pre-retinal neovascularization (NVE) and fibrous proliferation are visible on fluorescein angiography (FA)

Common Etiologies

Proliferative diabetic retinopathy (PDR) — the single most common cause of TRD; fibrovascular proliferation develops from neovascularization at the disc (NVD) and elsewhere (NVE) in response to retinal ischemia¹³
Proliferative vitreoretinopathy (PVR) — fibrocellular membrane formation after rhegmatogenous RD (treated or untreated), listed explicitly in the ICD-10-CM Includes note for H33.4¹
Sickle cell retinopathy — sea fan neovascularization with fibrovascular traction
Retinopathy of prematurity (ROP) — fibrovascular ridge formation with progressive traction; a specific indication for 67113¹⁰
Penetrating ocular trauma — post-traumatic fibrovascular proliferation
Ocular ischemic syndrome / retinal vein occlusion — neovascularization with secondary traction
Post-surgical PVR — proliferative membranes forming after prior retinal detachment repair

🌳 Code Tree (Hierarchy)

H00-H59 Diseases of the Eye and Adnexa  
└── H30-H36 Disorders of Choroid and Retina  
└── H33 Retinal Detachments and Breaks  
├── H33.0 Retinal Detachment WITH Retinal Break (rhegmatogenous)  
├── H33.1 Retinoschisis and Retinal Cysts  
├── H33.2 Serous Retinal Detachment (without break)  
│ └── H33.20 / H33.21 / H33.22 / H33.23  
├── H33.3 Retinal Breaks WITHOUT Detachment  
├── H33.4 Traction Detachment of Retina ← THIS SUBCATEGORY  
│ ├── H33.40 ◀ UNSPECIFIED EYE — YOU ARE HERE ✅  
│ ├── H33.41 Right Eye  
│ ├── H33.42 Left Eye  
│ └── H33.43 Bilateral  
└── H33.8 Other Retinal Detachments

5th Character — Laterality Key

⚠️ Same 5-Character Structure as H33.2x

Like the serous retinal detachment family (H33.20-H33.23), the H33.4 subcategory uses the 5th character for laterality — there is no 6th character in this code family. The code is complete at 5 characters. Do not attempt to add a 6th character — doing so will produce an invalid code that will reject on any HIPAA-covered transaction.³

5th Character	Code	Meaning
0	H33.40	Unspecified Eye ◀ This code
1	H33.41	Right Eye
2	H33.42	Left Eye
3	H33.43	Bilateral

When Is H33.40 Truly Appropriate?

In clinical practice, traction retinal detachment is almost always identified in a specific eye on examination, imaging, and operative documentation. H33.40 should be reserved for the rare scenario where laterality is genuinely undocumented across the entire medical record. Before assigning H33.40, review the ophthalmology consultation, the operative/procedure report, all imaging reads (OCT, FA, B-scan), and any nursing assessments. If any of these documents a specific eye, assign the appropriate laterality code. A CDI query is strongly recommended when the diagnosis is clear but the eye is not specified.³

✅ Includes Notes

At the H33.4 subcategory level, the following descriptor is explicitly listed as an Includes note:¹³

Proliferative vitreo-retinopathy with retinal detachment (PVR with RD) — fibrocellular membrane formation causing traction on the retina, classified here when the resulting traction produces frank retinal detachment. PVR is most commonly a complication of prior rhegmatogenous retinal detachment repair and represents one of the most surgically challenging vitreoretinal entities.

PVR Staging Note for Coders

PVR is staged using the Retina Society Classification (A, B, C, D). PVR Stage C-1 or greater is one of the defining criteria for assignment of CPT 67113 (complex retinal detachment repair).¹⁰¹¹ When reviewing operative notes for PVR-related TRD cases, document the PVR stage clearly — it directly drives the CPT code selection and must be supported by operative documentation for 67113 to survive a payer audit.

❌ Excludes Notes

Excludes1 notes at the H33 category level — these conditions CANNOT be coded simultaneously with H33.40 at the same encounter for the same eye.

Excludes1 — at the H33 Category Level

Excluded Code(s)	Condition	Clinical Reason
H35.72-	Serous detachment of retinal pigment epithelium	RPE detachment is a fundamentally different anatomical event — the RPE separates from Bruch’s membrane, not the neurosensory retina from the RPE. These are mutually exclusive with TRD at the same encounter.³
H35.73-	Hemorrhagic detachment of retinal pigment epithelium	Same distinction as above — RPE hemorrhagic detachment is separately classified and excludes concurrent TRD coding.³

Watch for Combined TRD + Rhegmatogenous Detachment

If documentation describes a combined tractional-rhegmatogenous retinal detachment (TRD with a coexisting full-thickness break — common in advanced PDR), this is NOT solely captured by H33.40. In this scenario, the appropriate H33.0x code for the break-type detachment takes coding precedence, and the traction component should be addressed in documentation with the surgeon. Query for clarification on the primary mechanism driving the detachment.³⁹

⚕️ HCC Information (Risk Adjustment)

Field	Detail
H33.40 HCC Mapped?	❌ No
CMS-HCC Model	V28 — Fully implemented CY2026
HCC Category for H33.40	None — traction detachment codes do not map to a payment HCC under V28
RAF Impact (H33.40 alone)	None
⚠️ Related HCC Opportunity	When TRD is due to proliferative diabetic retinopathy, the diabetic retinopathy codes (E11.351x, E10.351x) DO map to HCC 122 — see below

Critical HCC Tip — Don't Miss the Diabetic Etiology Code!

H33.40 itself carries no HCC weight under CMS-HCC V28.⁶⁷ However, when the TRD is caused by proliferative diabetic retinopathy (PDR), the etiology diagnosis — properly coded as E11.3511-E11.3519 (Type 2 DM with proliferative diabetic retinopathy with TRD) — maps to HCC 122 (Proliferative Diabetic Retinopathy and Vitreous Hemorrhage) under CMS-HCC V28.⁷⁸ This is a significant RAF-generating code family that is frequently undercaptured. As a profee coder, always look for the underlying diabetic etiology when reviewing TRD cases and ensure both the etiology (E11.35xx) AND manifestation (H33.4x) are captured per the ICD-10-CM diabetes etiology/manifestation convention — the etiology code is sequenced first.³

CMS-HCC V28 — Diabetic TRD Etiology Codes with HCC Mapping

Code	Description	HCC V28
E11.3511	T2DM w/ proliferative DR w/ TRD involving macula, right eye	HCC 122
E11.3512	T2DM w/ proliferative DR w/ TRD involving macula, left eye	HCC 122
E11.3513	T2DM w/ proliferative DR w/ TRD involving macula, bilateral	HCC 122
E11.3519	T2DM w/ proliferative DR w/ TRD involving macula, unspecified eye	HCC 122
E11.3521	T2DM w/ proliferative DR w/ TRD not involving macula, right eye	HCC 122
E11.3522	T2DM w/ proliferative DR w/ TRD not involving macula, left eye	HCC 122
E11.3523	T2DM w/ proliferative DR w/ TRD not involving macula, bilateral	HCC 122
E11.3529	T2DM w/ proliferative DR w/ TRD not involving macula, unspecified	HCC 122

Etiology / Manifestation Convention Reminder

Per ICD-10-CM Official Guidelines, when a condition has both an etiology code and a manifestation code, the etiology is sequenced first and the manifestation follows.³ For diabetic TRD: sequence the appropriate E11.35xx code before H33.40 (or H33.41-H33.43). The diabetic retinopathy codes are indicated in the tabular list with a “use additional code” instruction directing to H33.4x for TRD, and the H33.4x codes are marked “code first” for the underlying diabetic condition.

🏥 MS-DRG (Inpatient)

Traction retinal detachment — particularly diabetic TRD — is one of the most surgically complex vitreoretinal conditions and frequently results in inpatient surgical admissions. Relevant for your inpatient profee work!

Medical Admission (No Qualifying Surgery)

MS-DRG	Title	MDC	Type
124	Other Disorders of the Eye — with MCC	MDC 02 — Eye	Medical
125	Other Disorders of the Eye — with CC	MDC 02 — Eye	Medical
126	Other Disorders of the Eye — without CC/MCC	MDC 02 — Eye	Medical

Surgical Admission (Qualifying OR Procedure Performed)

MS-DRG	Title	MDC	Type
115	Extraocular Procedures Except Orbit — with CC/MCC	MDC 02 — Eye	Surgical
116	Extraocular Procedures Except Orbit — without CC/MCC	MDC 02 — Eye	Surgical

MS-DRG Grouping Logic for TRD Surgical Cases

Pars plana vitrectomy with membrane peeling (67113 or 67108 on the profee side) coded in ICD-10-PCS on the facility claim will typically generate a qualifying OR-level ICD-10-PCS code that moves the case from medical (124/125/126) into surgical (115/116).⁴ The split between 115 and 116 is driven purely by CC/MCC presence among the secondary diagnoses. In diabetic TRD cases, the underlying conditions (diabetes, hypertension, CKD) frequently provide CC or MCC weight — always capture all clinically significant comorbidities to support accurate DRG assignment and reimbursement.³

CC/MCC Impact Summary

Clinical Scenario	Expected MS-DRG
H33.40 + qualifying surgery (vitrectomy/membrane peel) + CC or MCC	115
H33.40 + qualifying surgery + no CC/MCC	116
H33.40 (no surgery) + MCC (e.g., A41.9 sepsis, N17.9 AKI)	124
H33.40 (no surgery) + CC (e.g., I10 HTN, E11.9 T2DM)	125
H33.40 (no surgery) + no CC/MCC	126

wRVU Note

Work RVUs listed are approximate values based on the CY2026 CMS Medicare Physician Fee Schedule (MPFS). TRD repair CPT codes — particularly 67113 — carry some of the highest wRVU values in all of ophthalmology due to the extreme technical complexity, duration, and risk involved. Always verify against the current MPFS relative value file or your group’s contractual fee schedule before finalizing charges.⁵

🔬 Diagnostic / Evaluation CPT Codes

CPT Code	Description	wRVU	Asst. Payable
92004	Ophthalmological exam, new patient, comprehensive, with dilation	2.67	N/A — E/M
92014	Ophthalmological exam, established patient, comprehensive, with dilation	1.34	N/A — E/M
92134	OCT scanning, posterior segment, with interpretation & report, unilateral or bilateral	0.00 (TC/PC split)	N/A — Diagnostic
76512	Ophthalmic ultrasound, B-scan (with or without non-quantitative A-scan)	0.72	N/A — Diagnostic
92242	Fluorescein angiography with interpretation and report	0.00 (TC/PC split)	N/A — Diagnostic

🔧 Therapeutic / Surgical CPT Codes

CPT Code	Description	wRVU (approx.)	Global Period	Asst. Payable (Medicare)
67108	Repair of retinal detachment with vitrectomy, any method, including air/gas tamponade, focal endolaser, cryotherapy, drainage of subretinal fluid, scleral buckling	16.70	90 days	⚠️ Verify current MPFS indicator
67113	Repair of complex retinal detachment (e.g., PVR stage C-1 or greater, diabetic TRD, ROP, retinal tear >90°), with vitrectomy and membrane peeling, including air/gas/silicone oil tamponade, cryotherapy, endolaser, subretinal fluid drainage, scleral buckling, removal of lens	~19-21	90 days	⚠️ Verify current MPFS indicator
67036	Vitrectomy, mechanical, pars plana approach (standalone, without additional retinal repair components)	~14.11	90 days	⚠️ Verify current MPFS indicator
67028	Intravitreal injection of pharmacologic agent (e.g., anti-VEGF for pre-op regression of neovascularization prior to TRD repair)	~0.68	0 days	⚠️ Indicator 0 — payable with documentation

67108 vs. 67113 — The Single Most Important CPT Decision in TRD Coding

The selection between 67108 and 67113 is one of the highest-audit-risk CPT decisions in vitreoretinal surgery.⁹¹¹ 67113 requires ALL of the following to be documented in the operative note:¹⁰¹¹

Pars plana vitrectomy was performed, AND

Membrane peeling was performed, AND

The case meets at least ONE of these complex criteria:

PVR Stage C-1 or greater

Diabetic tractional retinal detachment

Retinopathy of prematurity (ROP)

Retinal tear greater than 90 degrees

If membrane peeling is NOT documented, or if none of the complex criteria are met, 67108 is the correct code regardless of how complex the surgery appears clinically. Missing this distinction can result in overpayment (unbundling audit risk) or claim denial. CGS Medicare has published a specific fact sheet on 67113 documentation requirements — familiarize your retina surgeons with it.¹⁰

Pre-Operative Anti-VEGF Injection Coding

Many retina surgeons administer an intravitreal anti-VEGF injection (e.g., Avastin, Eylea, Lucentis) approximately 1-2 weeks before TRD repair surgery to induce regression of neovascularization and reduce intraoperative bleeding risk. If the injection is performed at a separate visit before the 90-day global of the surgery begins, it may be billed separately with 67028 + -LT or -RT. If performed on the same day as the surgery, it is typically bundled and not separately reportable. Always verify your payer’s policy and document the medical necessity of the pre-operative injection separately from the surgical note.⁹

Assistant at Surgery — Payment Indicator Verification

Traction retinal detachment repair (particularly 67113) is one of the most technically demanding procedures in ophthalmology, and an assistant surgeon is often medically necessary for complex membrane peeling cases. However, Medicare MPFS payment indicators for surgical CPT codes must be verified annually in the current MPFS RVU file (Column U).¹²¹⁴ Indicator meanings:

Indicator Meaning
0 Payable — documentation of medical necessity required with claim
1 NOT payable — statutory restriction regardless of documentation
2 Payable — no restriction
9 Concept does not apply

Indicator	Meaning
0	Payable — documentation of medical necessity required with claim
1	NOT payable — statutory restriction regardless of documentation
2	Payable — no restriction
9	Concept does not apply

🔖 Commonly Used Modifiers

Modifier	Description	Use With H33.40
-RT	Right side / right eye	✅ Append to CPT codes when treating the right eye
-LT	Left side / left eye	✅ Append to CPT codes when treating the left eye
-50	Bilateral procedure	Use if surgery performed on both eyes at the same operative session (rare in TRD)
-79	Unrelated procedure by same physician during postoperative period	Use when treating TRD within the global of an unrelated prior surgery
-78	Return to OR for related complication during postoperative period	If patient returns to OR within global period of prior related surgery (e.g., re-vitrectomy for recurrent TRD)
-80	Assistant surgeon — physician	⚠️ Verify MPFS indicator for specific CPT in current RVU file
-AS	Assistant at surgery — non-physician (PA, NP, CNS)	⚠️ Same verification required; Medicare pays at 85% of 16% of MPFS
-51	Multiple procedures	Append to secondary procedures when billing multiple CPTs same day
-24	Unrelated E/M during postoperative period	Use for E/M within the global of TRD repair surgery when the visit is for an unrelated condition
-25	Significant, separately identifiable E/M on same day as procedure	Use when a distinct, documented E/M is performed same day as an intravitreal injection (e.g., 67028 day)

📋 Coding Guidelines & Documentation Tips

Always Query Laterality First

As noted throughout this note, H33.40 is the weakest specificity option in this family. TRD almost universally involves a documented specific eye across the medical record. Prioritize assigning H33.41 (right), H33.42 (left), or H33.43 (bilateral) at every opportunity. A CDI query to confirm eye laterality is fast and almost always productive in the inpatient setting.³

Etiology/manifestation sequencing is mandatory for diabetic TRD: Per ICD-10-CM guidelines, the underlying cause (E11.35xx for T2DM, E10.35xx for T1DM) is sequenced first, with H33.40-H33.43 coded as the manifestation. Never lead with H33.4x when a documented diabetic etiology is present — this will misrepresent the reason for admission and potentially reduce HCC capture opportunity.³
Macula-on vs. macula-off documentation matters clinically and for HCC: The E11.351x codes (involving macula) vs. E11.352x codes (not involving macula) are distinct and affect both specificity and HCC mapping. Query surgeons or review OCT reports to determine macular involvement status and code accordingly.⁷
Combined TRD + Rhegmatogenous RD: If the operative note documents both tractional AND rhegmatogenous components (a combined TRD-RRD), this is clinically distinct from pure TRD. In this scenario, the rhegmatogenous component typically drives the primary code selection, but documentation should clearly describe both mechanisms. CDI query the surgeon if the record is ambiguous about whether a break is present.³
90-day global period: Both 67108 and 67113 carry a 90-day global period. E/M services and related follow-up visits during the global window are bundled and not separately payable unless modifier -24 (unrelated E/M) or other appropriate modifiers with clear documentation are applied.⁹
NCCI Bundling: Multiple vitreoretinal CPT codes have NCCI bundling relationships — for example, 67036 (vitrectomy) is a component of 67113 and cannot be billed separately on the same date as 67113 for the same eye. Always check the current NCCI edit table before billing multiple surgical CPT codes at the same encounter.¹⁴
Silicone oil documentation: When silicone oil is used as tamponade during TRD repair (a common adjunct in complex diabetic TRD), document this explicitly in the operative note — it supports the use of 67113 over 67108 and may be separately reportable on a subsequent visit when silicone oil is removed (67121 or 67120).⁹¹¹

💡 Coding Examples

Example 1 — Outpatient Visit, Established Patient, Diabetic TRD Identified, Right Eye, No Surgery Yet

Scenario: A 57-year-old established patient with type 2 diabetes presents for a retina follow-up. The retina specialist performs a comprehensive ophthalmological exam with dilation and OCT. The ophthalmologist documents “proliferative diabetic retinopathy with traction retinal detachment not involving the macula, right eye. Surgery deferred pending optimization of glycemic control.”

CPT: 92014-RT CPT: 92134-RT ICD-10-CM (Primary — Etiology First): E11.3521 (T2DM w/ prolif. DR w/ TRD not involving macula, right eye — HCC 122) ICD-10-CM (Manifestation): H33.41 (Traction detachment of retina, right eye)

HCC Opportunity

E11.3521 maps to HCC 122 under CMS-HCC V28 — ensure this is captured and coded with maximum specificity for risk adjustment purposes.⁷

Example 2 — Surgical Case, Complex Diabetic TRD with Membrane Peeling, Left Eye

Scenario: A 63-year-old patient with T1DM presents with worsening vision in the left eye. Examination and OCT confirm macula-off TRD secondary to proliferative diabetic retinopathy. The surgeon performs pars plana vitrectomy with extensive membrane peeling, endolaser photocoagulation, and silicone oil tamponade. Operative note documents “diabetic traction retinal detachment, left eye, with membrane peeling performed.”

CPT: 67113--LT ICD-10-CM (Etiology First): E10.3512 (T1DM w/ prolif. DR w/ TRD involving macula, left eye) ICD-10-CM (Manifestation): H33.42 (Traction detachment of retina, left eye)

CPT Justification

67113 is appropriate here because: (1) vitrectomy was performed, (2) membrane peeling was performed, and (3) the case meets the specific complex criterion of “diabetic tractional retinal detachment.”¹⁰¹¹

Example 3 — Surgical Case, PVR with Traction RD, Membrane Peeling Performed

Scenario: A 48-year-old patient with a history of prior rhegmatogenous retinal detachment repair (scleral buckle 8 months ago) presents with recurrent visual decline in the right eye. Examination reveals PVR Stage C-2 with traction retinal detachment. The surgeon performs pars plana vitrectomy, membrane peeling (anterior and posterior), and silicone oil injection. Operative note clearly states “PVR Stage C-2 with traction retinal detachment, right eye.”

CPT: 67113-RT ICD-10-CM (Primary): H33.41 (Traction detachment, right eye — PVR is captured in the H33.4 Includes note; no separate PVR code required) ICD-10-CM (Additional): Z98.890 (Other specified postprocedural states — prior scleral buckle)

Includes Note — PVR with RD

PVR with retinal detachment is explicitly listed in the Includes note for H33.4 — no separate code is needed for the PVR in this scenario. The PVR stage should be documented by the surgeon in the operative note to support 67113 selection over 67108.¹¹⁰

Example 4 — Inpatient Medical Admission, Diabetic TRD, Bilateral, Deferred Surgery, with CC

Scenario: A 70-year-old Medicare patient with T2DM and essential hypertension is admitted for bilateral diabetic traction retinal detachments. Surgery is deferred due to elevated HbA1c and uncontrolled blood glucose. Medical optimization is undertaken during the admission. No surgical procedure is performed.

Principal Dx: E11.3523 (T2DM w/ prolif. DR w/ TRD not involving macula, bilateral — HCC 122) Additional Dx: H33.43 (Traction detachment of retina, bilateral) Additional Dx: I10 (Essential hypertension — CC) Additional Dx: E11.65 (T2DM with hyperglycemia — additional diabetic manifestation) MS-DRG Assignment: 125 — Other Disorders of the Eye with CC POA: Y — all diagnoses present at admission

Example 5 — Laterality Clarified at Follow-Up, Code Updated

Scenario: During an urgent care visit, H33.40 was assigned because the documentation was incomplete and bilateral involvement was uncertain. At the follow-up retina clinic visit, the surgeon’s note confirms “traction retinal detachment, right eye only.”

Correct Code at Follow-Up: H33.41 (Traction detachment of retina, right eye)

Do not carry H33.40 forward once laterality is clearly established. Assign the most specific code supported by current documentation at each individual encounter.³

🗂️ Differential Diagnosis Coding

Condition	ICD-10-CM Code	Key Distinction
Traction detachment, right eye	H33.41	Use whenever right eye is documented
Traction detachment, left eye	H33.42	Use whenever left eye is documented
Traction detachment, bilateral	H33.43	Use when both eyes documented — preferred over two unilateral codes
Serous retinal detachment, unspecified	H33.20	No traction membranes; fluid-driven mechanism
Unspecified RD with break, unspecified eye	H33.009	Break IS present; rhegmatogenous mechanism
T2DM w/ prolif. DR w/ TRD (macula), right eye	E11.3511	Code first when diabetic etiology documented — HCC 122
T2DM w/ prolif. DR w/ TRD (no macula), right eye	E11.3521	Code first when diabetic etiology documented — HCC 122
Serous detachment of RPE, right eye	H35.721	Excludes1 to H33.4x — RPE detachment ≠ TRD
Unspecified choroidal detachment, right eye	H31.401	Choroid detaches from sclera — adjacent but anatomically distinct
Proliferative vitreoretinopathy without RD	H35.23	PVR without detachment — when membranes haven’t yet caused frank TRD

Sources:

AAPC Codify — ICD-10-CM H33.40 & H33.4 Includes Note, aapc.com
PubMed / RETINA Journal — Visual and Anatomical Outcomes After Diabetic Tractional Retinal Detachment Repair, pubmed.ncbi.nlm.nih.gov (2018)
CMS — FY2026 ICD-10-CM Official Guidelines for Coding and Reporting, cms.gov
CMS — ICD-10-CM/PCS MS-DRG v37.0 Definitions Manual, cms.gov
AAPC — Work RVU Calculator, aapc.com
MedPAC — MA Part D CY2027 Comment Letter, medpac.gov (2026)
BCA — HCC Updates: Capturing Risk Accurately in 2026, bcarev.com (2026)
Wolters Kluwer — How CMS-HCC Version 28 Will Impact RAF Scores, wolterskluwer.com
Retina Today — Properly Coding Retina Surgeries, retinatoday.com
CGS Medicare — CPT 67113 Fact Sheet (A/B MAC Jurisdiction 15), cgsmedicare.com (2025)
Retina Today — Using CPT Code 67113 With Confidence, retinatoday.com (2025)
FCSO Medicare — Appropriate Use of Assistant at Surgery Modifiers and Payment Indicators, medicare.fcso.com
GenHealth.ai — ICD-10-CM H33.40 Traction Detachment of Retina, genhealth.ai
CMS — 2026 NCCI Medicare Coding Policy Manual, cms.gov
RVU Edge — CPT 67108 wRVU 16.70, rvuedge.com
ICD List — H33 Retinal Detachments and Breaks Code Structure, icdlist.com

Explorer

H33.40

🧬 ICD-10 CM H33.40 — Traction Detachment of Retina, Unspecified Eye

🩺 Clinical Description

Clinical Features & Presentation

Common Etiologies

🌳 Code Tree (Hierarchy)

5th Character — Laterality Key

✅ Includes Notes

❌ Excludes Notes

Excludes1 — at the H33 Category Level

⚕️ HCC Information (Risk Adjustment)

CMS-HCC V28 — Diabetic TRD Etiology Codes with HCC Mapping

🏥 MS-DRG (Inpatient)

Medical Admission (No Qualifying Surgery)

Surgical Admission (Qualifying OR Procedure Performed)

CC/MCC Impact Summary

💊 Related CPT Codes, wRVU & Reimbursement

🔬 Diagnostic / Evaluation CPT Codes

🔧 Therapeutic / Surgical CPT Codes

🔖 Commonly Used Modifiers

📋 Coding Guidelines & Documentation Tips

💡 Coding Examples

Example 1 — Outpatient Visit, Established Patient, Diabetic TRD Identified, Right Eye, No Surgery Yet

Example 2 — Surgical Case, Complex Diabetic TRD with Membrane Peeling, Left Eye

Example 3 — Surgical Case, PVR with Traction RD, Membrane Peeling Performed

Example 4 — Inpatient Medical Admission, Diabetic TRD, Bilateral, Deferred Surgery, with CC

Example 5 — Laterality Clarified at Follow-Up, Code Updated

🗂️ Differential Diagnosis Coding

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