Z53.32 ICD-10-CM Code: Thoracoscopic surgical procedure converted to open procedure
HCC Buddy Code Card
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FY 2026 Apr update / Factors influencing health status and contact with health services (Z00-Z99) / Encounters for other specific health care (Z40-Z53)
Z53.32
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceThoracoscopic surgical procedure converted to open procedure
A thoracoscopic surgical procedure (minimally invasive surgery of the chest using a small camera) was started but had to be converted to an open surgical procedure (larger incision) during the operation.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for Z53.32 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Z53.32 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Z53.32 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for Z53.32 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Z53.32 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Z53.32 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Z53.32 in this effective period.
Buddy Documentation Tip
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 Z53.32 an HCC code?
No. Z53.32 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- Z53.32
- Description
- Thoracoscopic surgical procedure converted to open procedure
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Z53.32 is the ICD-10-CM diagnosis code for thoracoscopic surgical procedure converted to open procedure. A thoracoscopic surgical procedure (minimally invasive surgery of the chest using a small camera) was started but had to be converted to an open surgical procedure (larger incision) during the operation. Z53.32 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering encounters for other specific health care (z40-z53).
Z53.32 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Use this code to document intraoperative conversion from thoracoscopic to open approach.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z53.32 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code to document intraoperative conversion from thoracoscopic to open approach
- •Always include the reason for conversion in the operative report documentation