C68.8
BillableMalignant neoplasm of overlapping sites of urinary organs
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is C68.8 an HCC code?
Yes. C68.8 maps to Bladder, Colorectal, and Other Cancers under the CMS-HCC V28 risk adjustment model (and Colorectal, Bladder, and Other Cancers under V24).
HCC Category Mapping
RAF weights shown are the community, non-dual, aged base weights from the CMS risk adjustment model file. Actual per-patient RAF contribution depends on member segment, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains in use during the transition and for historical data.
MEAT Criteria for C68.8
For C68.8to count as a valid HCC diagnosis in a given encounter, the provider's documentation must show MEAT: Monitor, Evaluate, Assess, or Treat. A diagnosis from a prior year does not carry forward automatically — it has to be re-documented and supported each calendar year.
- 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
Only one of M/E/A/T is required to support the code, but the documentation must be specific enough to show that the provider actually addressed C68.8 during that encounter — not just copy-forwarded from a problem list.
What This Code Means
C68.8 is the ICD-10-CM diagnosis code for malignant neoplasm of overlapping sites of urinary organs. Cancer involving multiple overlapping areas of the urinary system organs, such as the urethra, bladder, or related structures. C68.8 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, C68.8 maps to Bladder, Colorectal, and Other Cancers (HCC 22) with a community, non-dual, aged base RAF weight of 0.363. Under the older CMS-HCC V24 model, C68.8 maps to Colorectal, Bladder, and Other Cancers (HCC 11) with a community, non-dual, aged base RAF weight of 0.307. V28 is the CMS-HCC risk adjustment model that reached 100% phase-in for payment year 2026, replacing V24 which was used during the PY2024–PY2025 transition.
Use when tumor involves two or more urinary organs; document all affected sites. Because C68.8 maps to a payment HCC, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) for the encounter to count toward the patient's Medicare Advantage risk adjustment score. 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, RAF weights, and MEAT documentation criteria for C68.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use when tumor involves two or more urinary organs; document all affected sites
- •Review pathology and imaging reports to identify all involved anatomical structures
Clinical Significance
This code captures malignancies that span multiple urinary organs, indicating locally advanced disease that crosses anatomical boundaries. These tumors typically require multi-organ surgical resection (such as pelvic exenteration) and carry a higher burden of disease than single-organ involvement, reflecting greater healthcare resource needs.
Documentation Requirements
- ✓Pathology or imaging confirming tumor involvement across two or more distinct urinary organs
- ✓Documentation of which specific urinary organs are involved
- ✓Surgical or imaging evidence that a single-site code cannot adequately describe the extent
- ✓TNM staging reflecting multi-organ involvement
- ✓Treatment plan addressing the overlapping nature of the disease
Commonly Confused Codes
- •C67.8 — Overlapping sites of bladder: use when overlapping is within the bladder only; C68.8 is for involvement across different urinary organs
- •C68.9 — Urinary organ, unspecified: overlapping means multiple known sites; unspecified means the site is unknown
- •C65-C68 individual codes — If a primary site can be identified, code the primary site rather than overlapping