What is ICD-10 code C67.8?

C67.8 is the ICD-10-CM diagnosis code for Malignant neoplasm of overlapping sites of bladder. Cancer that involves multiple overlapping areas of the bladder, the organ that stores urine. It belongs to the ICD-10-CM chapter for neoplasms (c00-d49). C67.8 is a billable code, meaning it can be reported on a claim as a primary or secondary diagnosis when supported by documentation. C67.8 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. C67.8 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. C67.8 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 C67.8 map to under V28?

C67.8 maps to CMS-HCC V28 HCC 22 (Bladder, Colorectal, and Other Cancers). The category numbers, labels, and conditions come from the CMS-HCC V28 model file for payment year 2026.

2026 ICD-10-CM C67.8: Malignant neoplasm

C67.8 maps to CMS-HCC V28 22. A source-labeled RAF reference is available. Confirm the documented diagnosis and applicable coding requirements. MEAT criteria · RAF Calculator · free HCC coding tools

ICD-10-CM Code View

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Code lookupC67.8

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Neoplasms (C00-D49) / Malignant neoplasms of urinary tract (C64-C68)

C67.8

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

Malignant neoplasm of overlapping sites of bladder

Cancer that involves multiple overlapping areas of the bladder, the organ that stores urine.

Buddy Insight

Overlapping sites of bladder cancer indicates a tumor that spans across two or more anatomical regions of the bladder, typically suggesting locally advanced disease.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

Mapped

HCC 22

Bladder, Colorectal, and Othe...

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 11

Colorectal/Bladder/and Other ...

Code-level coefficient reference

RXHCC

Mapped

HCC 22

Prostate, Breast, Bladder, an...

Code-level coefficient reference

Code Book Path

Official

C67Malignant neoplasm of bladder C67.8Malignant neoplasm of overlapping sites of bladder

Inclusion Terms

Official

No inclusion terms are included in this display for C67.8. Check the code and parent instructions in the Code Book.

Excludes 2

Official

No Excludes 2 notes are included in this display for C67.8. Check the code and parent instructions in the Code Book.

Related Codes

Official

C67.0Malignant neoplasm of trigone of bladder C67.1Malignant neoplasm of dome of bladder C67.2Malignant neoplasm of lateral wall of bladder C67.3Malignant neoplasm of anterior wall of bladder C67.4Malignant neoplasm of posterior wall of bladder

Includes

Official

No Includes notes are included in this display for C67.8. Check the code and parent instructions in the Code Book.

Excludes 1

Official

No Excludes 1 notes are included in this display for C67.8. Check the code and parent instructions in the Code Book.

Code First

Official

No Code First sequencing instructions are included in this display for C67.8. Check the code and parent instructions in the Code Book.

Use Additional

Official

No Use Additional Code instructions are included in this display for C67.8. Check the code and parent instructions in the Code Book.

Code Also

Official

No Code Also instructions are included in this display for C67.8. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

Documentation explicitly stating the tumor involves multiple distinct bladder sites

Cystoscopy or surgical findings identifying the specific overlapping regions

Pathology confirming malignancy with histological type and grade

TNM staging reflecting the extent of involvement

MEAT Support

HCC Buddy guidance

Documentation explicitly stating the tumor involves multiple distinct bladder sites

Cystoscopy or surgical findings identifying the specific overlapping regions

Pathology confirming malignancy with histological type and grade

TNM staging reflecting the extent of involvement

Audit Caution

HCC Buddy guidance

Using this code when the tumor is in a single site but the coder is unsure which one — that should be coded as C67.9 (unspecified)

Confusing overlapping sites within the bladder (C67.8) with overlapping urinary organs (C68.8)

Not reviewing cystoscopy and pathology reports that often clearly identify the anatomical regions involved

Common Mistakes

HCC Buddy guidance

C67.4-C67.7 — Specific bladder wall codes: if the tumor can be localized to one primary site, use the specific code rather than overlapping

C67.9 — Bladder, unspecified: overlapping means multiple known sites; unspecified means the site is unknown — these are different clinical scenarios

C68.8 — Overlapping sites of urinary organs: use C67.8 when overlapping is within the bladder only; use C68.8 when spanning across different urinary organs

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 C67.8 an HCC code?

Yes. C67.8 (Malignant neoplasm of overlapping sites of bladder) maps to HCC 22, Bladder, Colorectal, and Other Cancers under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.363. 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: C67.8 is billable and maps to V28 HCC 22, Bladder, Colorectal, and Other Cancers. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.

Code: C67.8
Description: Malignant neoplasm of overlapping sites of bladder
HCC (V28): HCC 22 — Bladder, Colorectal, and Other Cancers
RAF reference coefficient: 0.363
Billable: Yes
Payment year: 2026

HCC Category Mapping

V28HCC 22, Bladder, Colorectal, and Other Cancers

0.363

ESRDHCC 11, Colorectal/Bladder/and Other Cancers

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 C67.8 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for C67.8

For C67.8, 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

C67.8 is the ICD-10-CM diagnosis code for malignant neoplasm of overlapping sites of bladder. Cancer that involves multiple overlapping areas of the bladder, the organ that stores urine. C67.8 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering malignant neoplasms of urinary tract (c64-c68).

Under the CMS-HCC V28 risk adjustment model, C67.8 maps to Bladder, Colorectal, and Other Cancers (HCC 22) with a source-labeled community, non-dual, aged reference coefficient of 0.363. No V24 mapping is shown for C67.8; 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.

Use this code when the tumor spans across two or more distinct sites within the bladder. For C67.8, 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 C67.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•Use this code when the tumor spans across two or more distinct sites within the bladder
•Obtain pathology reports to confirm the extent of involvement across bladder regions

Clinical Significance

Overlapping sites of bladder cancer indicates a tumor that spans across two or more anatomical regions of the bladder, typically suggesting locally advanced disease. These tumors often carry a worse prognosis than site-confined tumors and frequently require more aggressive treatment approaches including radical cystectomy.

Documentation Requirements

✓Documentation explicitly stating the tumor involves multiple distinct bladder sites
✓Cystoscopy or surgical findings identifying the specific overlapping regions
✓Pathology confirming malignancy with histological type and grade
✓TNM staging reflecting the extent of involvement
✓Explanation of why a single site code cannot be assigned

Commonly Confused Codes

•C67.4-C67.7: Specific bladder wall codes: if the tumor can be localized to one primary site, use the specific code rather than overlapping
•C67.9: Bladder, unspecified: overlapping means multiple known sites; unspecified means the site is unknown: these are different clinical scenarios
•C68.8: Overlapping sites of urinary organs: use C67.8 when overlapping is within the bladder only; use C68.8 when spanning across different urinary organs