What is ICD-10 code C69.40?

C69.40 is the ICD-10-CM diagnosis code for Malignant neoplasm of unspecified ciliary body. It belongs to the ICD-10-CM chapter for neoplasms (c00-d49). C69.40 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. C69.40 is part of the FY2026 ICD-10-CM code set published by the CMS National Center for Health Statistics and used on Medicare, Medicaid, and commercial claims in the United States.

Yes. C69.40 is a billable ICD-10-CM code that can be reported on professional and institutional claims as a primary or secondary diagnosis when the provider documentation supports the specific condition described. Billable codes in ICD-10-CM are coded to the highest level of specificity available for the documented diagnosis. C69.40 is current for fiscal year 2026 and remains in the active CMS ICD-10-CM code set published by the National Center for Health Statistics.

Which HCC does C69.40 map to under V28?

C69.40 maps to CMS-HCC V28 HCC 23 (Prostate, Breast, and Other Cancers and Tumors). The category numbers, labels, and conditions come from the CMS-HCC V28 model file for payment year 2026.

What documentation supports C69.40?

If the medical record specifies the exact location within the ciliary body (such as a specific quadrant or region), use a more specific code like C69.41, C69.42, or C69.43 instead of the unspecified code C69.40 Ensure laterality is documented separately using the appropriate 7th character extension (1 for right eye, 2 for left eye, 3 for bilateral) when applicable to your coding system For C69.40, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. See the MEAT criteria checklist at /meat-criteria for what Monitor, Evaluate, Assess, or Treat looks like in a note. One mnemonic element does not establish that a diagnosis is reportable.

2026 ICD-10-CM C69.40: Malignant neoplasm

C69.40 maps to CMS-HCC V28 23. A source-labeled RAF reference is available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · HCC Buddy coding tools

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Code lookupC69.40

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Neoplasms (C00-D49) / Malignant neoplasms of eye, brain and other parts of central nervous system (C69-C72)

C69.40

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Malignant neoplasm of unspecified ciliary body

This code describes cancer that has developed in the ciliary body, which is a part of the eye that helps control the lens and produces fluid inside the eye. The specific location within the ciliary body is not specified in the medical record.

Buddy Insight

Ciliary body malignancy, typically melanoma, is a uveal tract cancer that can disrupt aqueous humor production and lens accommodation.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

Mapped

HCC 23

Prostate, Breast, and Other C...

Code-level coefficient reference

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

Mapped

HCC 012

HHS-HCC 012 adult, RAF varies...

Code-level coefficient reference

ESRD/PACE

Mapped

HCC 12

Breast/Prostate/and Other Can...

Code-level coefficient reference

RXHCC

Mapped

HCC 22

Prostate, Breast, Bladder, an...

Code-level coefficient reference

Code Book Path

Official

C69Malignant neoplasm of eye and adnexa C69.4Malignant neoplasm of ciliary body C69.40Malignant neoplasm of unspecified ciliary body

Inclusion Terms

Official

No inclusion terms are included in this display for C69.40. Check the code and parent instructions in the Code Book.

Excludes 2

Official

No Excludes 2 notes are included in this display for C69.40. Check the code and parent instructions in the Code Book.

Related Codes

Official

C69.41Malignant neoplasm of right ciliary body C69.42Malignant neoplasm of left ciliary body

Includes

Official

No Includes notes are included in this display for C69.40. Check the code and parent instructions in the Code Book.

Excludes 1

Official

malignant neoplasm of connective tissue of eyelid (C49.0)Inherited from C69
malignant neoplasm of eyelid (skin) (C43.1-, C44.1-)Inherited from C69
malignant neoplasm of optic nerve (C72.3-)Inherited from C69

Code First

Official

No Code First sequencing instructions are included in this display for C69.40. Check the code and parent instructions in the Code Book.

Use Additional

Official

No Use Additional Code instructions are included in this display for C69.40. Check the code and parent instructions in the Code Book.

Code Also

Official

No Code Also instructions are included in this display for C69.40. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

Pathology or clinical findings confirming ciliary body malignancy

Laterality — query required since this unspecified code indicates missing documentation

Ultrasound biomicroscopy or imaging confirming ciliary body origin

Assessment for secondary glaucoma or lens subluxation

MEAT Support

HCC Buddy guidance

Pathology or clinical findings confirming ciliary body malignancy

Laterality — query required since this unspecified code indicates missing documentation

Ultrasound biomicroscopy or imaging confirming ciliary body origin

Assessment for secondary glaucoma or lens subluxation

Audit Caution

HCC Buddy guidance

Using unspecified laterality when ophthalmology records document which eye is affected

Coding a choroidal melanoma with ciliary body extension as primary ciliary body cancer

Missing the prognostic significance of ciliary body involvement in uveal melanoma staging

Confusing ciliary body melanoma with iris melanoma — different structures with different codes

Common Mistakes

HCC Buddy guidance

C69.41/C69.42 — Right/left ciliary body: use laterality-specific codes when the affected eye is documented

C69.30-C69.32 — Choroidal malignancy: ciliary body is anterior to the choroid; large tumors may involve both structures

C69.00-C69.02 — Conjunctival malignancy: completely different anatomical location (external versus internal eye)

D31.40-D31.42 — Benign neoplasm of ciliary body: confirm malignancy before coding

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is C69.40 an HCC code?

Yes. C69.40 (Malignant neoplasm of unspecified ciliary body) maps to HCC 23, Prostate, Breast, and Other Cancers and Tumors under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.186. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes. It is billable for payment year 2026.

Coder answer: C69.40 is billable and maps to V28 HCC 23, Prostate, Breast, and Other Cancers and Tumors. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code: C69.40
Description: Malignant neoplasm of unspecified ciliary body
HCC (V28): HCC 23 — Prostate, Breast, and Other Cancers and Tumors
RAF reference coefficient: 0.186
Billable: Yes
Payment year: 2026

HCC Category Mapping

V28HCC 23, Prostate, Breast, and Other Cancers and Tumors

0.186

ESRDHCC 12, Breast/Prostate/and Other Cancers and Tumors

Not separately weighted

RxHCCHCC 22, Prostate, Breast, Bladder, and Other Cancers and Tumors

Not separately weighted

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work C69.40 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for C69.40

For C69.40, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule.

MMonitor: signs, symptoms, disease progression, or lab trending documented in the note
EEvaluate: test results, medication response, or physical findings reviewed by the provider
AAssess: explicit mention in the assessment or plan with acknowledgment of status
TTreat: medication, referral, procedure, therapy, or counseling tied to the diagnosis

Coder workflow notes

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What This Code Means

C69.40 is the ICD-10-CM diagnosis code for malignant neoplasm of unspecified ciliary body. This code describes cancer that has developed in the ciliary body, which is a part of the eye that helps control the lens and produces fluid inside the eye. The specific location within the ciliary body is not specified in the medical record. C69.40 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering malignant neoplasms of eye, brain and other parts of central nervous system (c69-c72).

Under the CMS-HCC V28 risk adjustment model, C69.40 maps to Prostate, Breast, and Other Cancers and Tumors (HCC 23) with a source-labeled community, non-dual, aged reference coefficient of 0.186. No V24 mapping is shown for C69.40; use the applicable model and payment year when reviewing the V28 mapping. For CY2026 non-PACE Medicare Advantage, CMS uses 100% of the 2024 CMS-HCC model (V28). PACE uses a separate model blend. Source-labeled code-level coefficients are references, not member totals. Actual contribution depends on complete member context, hierarchy and cleanup rules, interactions, and model year. HCC Buddy's RAF Calculator supports CMS-HCC V28 PY2026 and shows no score unless every required source and calculation check passes.

If the medical record specifies the exact location within the ciliary body (such as a specific quadrant or region), use a more specific code like C69.41, C69.42, or C69.43 instead of the unspecified code C69.40. For C69.40, confirm that the documentation supports the diagnosis and meets the applicable coding, encounter, program and payer requirements. MEAT (Monitor, Evaluate, Assess, or Treat) is a review mnemonic, not a universal CMS coding rule. When documentation is ambiguous, coders should issue a provider query rather than assume the highest-specificity variant.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for C69.40 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•If the medical record specifies the exact location within the ciliary body (such as a specific quadrant or region), use a more specific code like C69.41, C69.42, or C69.43 instead of the unspecified code C69.40
•Ensure laterality is documented separately using the appropriate 7th character extension (1 for right eye, 2 for left eye, 3 for bilateral) when applicable to your coding system

Clinical Significance

Ciliary body malignancy, typically melanoma, is a uveal tract cancer that can disrupt aqueous humor production and lens accommodation. It is less common than choroidal melanoma but carries similar metastatic risk. Ciliary body involvement is an adverse prognostic factor in uveal melanoma staging, making its documentation particularly important.

Documentation Requirements

✓Pathology or clinical findings confirming ciliary body malignancy
✓Laterality — query required since this unspecified code indicates missing documentation
✓Ultrasound biomicroscopy or imaging confirming ciliary body origin
✓Assessment for secondary glaucoma or lens subluxation
✓AJCC staging noting ciliary body involvement (which upgrades T category)

Commonly Confused Codes

•C69.41/C69.42: Right/left ciliary body: use laterality-specific codes when the affected eye is documented
•C69.30-C69.32: Choroidal malignancy: ciliary body is anterior to the choroid; large tumors may involve both structures
•C69.00-C69.02: Conjunctival malignancy: completely different anatomical location (external versus internal eye)
•D31.40-D31.42: Benign neoplasm of ciliary body: confirm malignancy before coding