Z93.51 ICD-10-CM Code: Cutaneous-vesicostomy status
Z93.51 maps to CMS-HCC V28 463. A source-labeled RAF reference is available. Documentation must support MEAT. MEAT criteria · RAF Calculator · HCC coding software
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FY 2026 Apr update / Factors influencing health status and contact with health services (Z00-Z99) / Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Z93.51
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceCutaneous-vesicostomy status
A patient has a cutaneous-vesicostomy, which is a surgically created opening from the bladder directly to the skin surface for urine drainage.
Buddy Insight
This code represents a specific type of urinary diversion where the bladder is directly connected to the skin surface, creating a permanent opening for urine drainage.
CMS-HCC V28
MappedHCC 463
Code-level coefficient reference
CMS-HCC V24
HistoricalHistorical
Not used for CY2026 payment
ACA/HHS
MappedHCC 253
Code-level coefficient reference
ESRD/PACE
MappedHCC 188
Code-level coefficient reference
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for Z93.51 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Z93.51 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Z93.51 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for Z93.51 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Z93.51 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Z93.51 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Z93.51 in this effective period.
Buddy Documentation Tip
MEAT Support
Audit Caution
Common Mistakes
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 Z93.51 an HCC code?
Yes. Z93.51 (Cutaneous-vesicostomy status) maps to HCC 463, Artificial Openings for Feeding or Elimination under the CMS-HCC V28 risk adjustment model, with a source-labeled community non-dual aged reference coefficient of 0.673. 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: Z93.51 is billable and maps to V28 HCC 463, Artificial Openings for Feeding or Elimination. Open it in the Code Book for the tabular path, RAF, and MEAT checklist.
- Code
- Z93.51
- Description
- Cutaneous-vesicostomy status
- HCC (V28)
- HCC 463 — Artificial Openings for Feeding or Elimination
- RAF reference coefficient
- 0.673
- Billable
- Yes
- Payment year
- 2026
HCC Category Mapping
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 Z93.51 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →
MEAT Criteria for Z93.51
For Z93.51 to 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 Z93.51 during that encounter, not just copy-forwarded from a problem list.
Coder workflow notes
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What This Code Means
Z93.51 is the ICD-10-CM diagnosis code for cutaneous-vesicostomy status. A patient has a cutaneous-vesicostomy, which is a surgically created opening from the bladder directly to the skin surface for urine drainage. Z93.51 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons with potential health hazards related to family and personal history and certain conditions influencing health status (z77-z99).
Under the CMS-HCC V28 risk adjustment model, Z93.51 maps to Artificial Openings for Feeding or Elimination (HCC 463) with a source-labeled community, non-dual, aged reference coefficient of 0.673. No V24 mapping is shown for Z93.51; use the applicable model and payment year when reviewing the V28 mapping. 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. 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.
This code is more specific than Z93.50 and should be used when the cutaneous-vesicostomy type is documented. Because Z93.51 maps to an HCC category, the provider's documentation must satisfy MEAT criteria (Monitor, Evaluate, Assess, or Treat) before the diagnosis is used for risk adjustment. 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 Z93.51 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is more specific than Z93.50 and should be used when the cutaneous-vesicostomy type is documented
- •Document the reason for the cutaneous-vesicostomy (e.g., neurogenic bladder, spinal cord injury) in the medical record
Clinical Significance
This code represents a specific type of urinary diversion where the bladder is directly connected to the skin surface, creating a permanent opening for urine drainage. This major urological intervention significantly impacts patient care complexity and requires specialized ostomy management and infection prevention.
Documentation Requirements
- ✓Confirmation of cutaneous-vesicostomy presence
- ✓Surgical creation documentation
- ✓Indication for this specific procedure
- ✓Current functionality and urine output
- ✓Ostomy care requirements and supplies
- ✓Skin integrity around stoma site
- ✓Any complications or management issues
- ✓Underlying urological pathology