Q76.8 ICD-10-CM Code: Other congenital malformations of bony thorax
HCC Buddy Code Card
Digital ICD-10 code-book layout with official code detail, always-visible risk models, Code Trumping, and Buddy coding guidance.
FY 2026 Apr update / Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0) / Congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
Q76.8
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceOther congenital malformations of bony thorax
A birth defect involving other abnormalities of the bones in the chest wall and rib cage that don't fit into more specific categories.
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 Q76.8 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Q76.8 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Q76.8 in this effective period.
Excludes 1
Official- congenital musculoskeletal deformities of spine and chest (Q67.5-Q67.8)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Q76.8 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Q76.8 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Q76.8 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 Q76.8 an HCC code?
No. Q76.8 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- Q76.8
- Description
- Other congenital malformations of bony thorax
- 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
Q76.8 is the ICD-10-CM diagnosis code for other congenital malformations of bony thorax. A birth defect involving other abnormalities of the bones in the chest wall and rib cage that don't fit into more specific categories. Q76.8 sits in the ICD-10-CM chapter for congenital malformations, deformations and chromosomal abnormalities (q00-qa0), within the section covering congenital malformations and deformations of the musculoskeletal system (q65-q79).
Q76.8 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 when the specific type of bony thorax malformation is not classifiable elsewhere.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Q76.8 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Use this code only when the specific type of bony thorax malformation is not classifiable elsewhere
- •Document the specific anatomical location and nature of the malformation for clarity