ICD-10-CM 2027
ICD-10 code for rib anomaly
From the official ICD-10-CM alphabetic index entry “Anomaly, anomalous (congenital) (unspecified type) › rib”. Page updated September 29, 2026.
About coding rib anomaly
The ICD-10-CM code for rib anomaly is Q76.6 (Other congenital malformations of ribs). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on Q76.6.
Within Q76, choose Q76.6 (Other congenital malformations of ribs) only when documentation doesn't support a more specific option: spina bifida occulta (Q76.0), Klippel-Feil syndrome (Q76.1), congenital spondylolisthesis (Q76.2), congenital scoliosis due to congenital bony malformation (Q76.3), other congenital malformations of spine, not associated with scoliosis (Q76.4), cervical rib (Q76.5), congenital malformation of sternum (Q76.7), other congenital malformations of bony thorax (Q76.8) and 1 more.
Don't report Q76.6 together with the conditions in its Excludes1 note: short rib syndrome (Q77.2).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific rib anomaly codes (official index)
- cervical Q76.5 — Cervical rib
Don't confuse with (Excludes1 for Q76.6)
- short rib syndrome (Q77.2)
Common questions about rib anomaly ICD-10 codes
What is the ICD-10 code for rib anomaly?
- Q76.6 — Other congenital malformations of ribs. More specific codes apply when the documentation supports them: Q76.5.
What is the ICD-10 code for cervical rib anomaly?
- Q76.5 — Cervical rib.
Is Q76.6 billable?
- Yes. Q76.6 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Q76.6 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict Q76.6 as a principal diagnosis.
Is Q76.6 a CC or MCC?
- Q76.6 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.