G89.12 ICD-10-CM Code: Acute post-thoracotomy pain
HCC Buddy Code Card
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FY 2026 Apr update / Diseases of the nervous system (G00-G99) / Other disorders of the nervous system (G89-G99)
G89.12
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceAcute post-thoracotomy pain
Acute pain that develops after a surgical procedure to open the chest (thoracotomy), typically lasting less than 3 months post-surgery.
CMS-HCC V28
00
RAF 0
CMS-HCC V24
00
RAF 0
ACA/HHS
00
RAF 0
ESRD/PACE
00
RAF 0
RXHCC
00
RAF 0
Code Trumping
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Code Book Path
Inclusion Terms
Official- Post-thoracotomy pain NOS
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for G89.12 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for G89.12 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for G89.12 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for G89.12 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for G89.12 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for G89.12 in this effective period.
Buddy Documentation Tip
Last updated: FY2026 ICD-10-CM Apr update, Apr 1, 2026 through Sep 30, 2026. CMS-HCC V28 is 100% phased in for payment year 2026.
Is G89.12 an HCC code?
No. G89.12 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
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
G89.12 is the ICD-10-CM diagnosis code for acute post-thoracotomy pain. Acute pain that develops after a surgical procedure to open the chest (thoracotomy), typically lasting less than 3 months post-surgery. G89.12 sits in the ICD-10-CM chapter for diseases of the nervous system (g00-g99), within the section covering other disorders of the nervous system (g89-g99).
G89.12 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 only for pain occurring within the acute post-operative period; transition to G89.22 if pain persists beyond 3 months.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for G89.12 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only for pain occurring within the acute post-operative period; transition to G89.22 if pain persists beyond 3 months
- •Document the date of the thoracotomy procedure to establish the acute timeframe