2027 ICD-10-CM Diagnosis Code Q76.6Other congenital malformations of ribs
ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q76
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- POA Exempt
- Chronic Condition
Q76.6 is a billable ICD-10-CM diagnosis code for other congenital malformations of ribs. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 564 through 566. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 6 closely related codes. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Musculoskeletal congenital conditions.
Code Identity
Code Classification
Present on Admission (POA)Billing
Q76.6 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Congenital malformations and deformations of the musculoskeletal system (Q65-Q79).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Accessory left rib
- Accessory rib
- Accessory right rib
- Agenesis of rib
- Anal atresia
- Aplasia of bone of thorax
- Aplasia of rib
- Autosomal dominant spondylocostal dysostosis
- Bilateral accessory ribs
- Cerebro-costo-mandibular syndrome
- Congenital abnormal fusion of rib cartilage
- Congenital abnormal shape of rib
- Congenital absence of rib
- Congenital anomaly of rib
- Congenital anomaly of rib cartilage
- Congenital atresia of pharynx
- Congenital bent rib
- Congenital branched rib
- Congenital branched rib cartilage
- Congenital focal enlargement of rib
- Congenital fusion of ribs
- Congenital hypoplasia of bone of thorax
- Congenital hypoplasia of bone structure of first rib
- Congenital hypoplasia of rib
- Congenital malposition of rib
- Congenital misalignment of rib
- Congenital thickening of rib
- Discontinuous rib
- Full supernumerary rib
- Imperforate oropharynx, costovertebral anomalies syndrome
- Incomplete ossification of rib
- Intercostal rib
- Interrupted ossification
- Lack of ossification of rib
- Short supernumerary rib
- Spondylocostal dysostosis with anal atresia and genitourinary malformation syndrome
- Thin rib
- Thoracic dysplasia and hydrocephalus syndrome
- Wavy constrictions of ribs
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q76.6: its own notes plus those printed at Q76 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Accessory rib
- Congenital absence of rib
- Congenital fusion of ribs
- Congenital malformation of ribs NOS
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- short rib syndrome (Q77.2)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
Notes
General instructions on how these codes are used.
- Codes from this chapter are not for use on maternal records
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
rib Q76.6
rib Q76.6
thoracic rib Q76.6
rib Q76.6
rib (cage) Q76.6
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Birth Defects
A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.
The full article covers:
- What are birth defects?
- What causes birth defects?
- Who is at risk of having a baby with birth defects?
- How are birth defects diagnosed?
- What are the treatments for birth defects?
- Can birth defects be prevented?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Q76.6 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q76.6Overview
What is the ICD-10 code for other congenital malformations of ribs?
The ICD-10-CM code for other congenital malformations of ribs is Q76.6 (sometimes written as Q766). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q76.6 (Congenital malformations of spine and bony thorax) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other congenital malformations of ribs on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q76.6 group to?
When other congenital malformations of ribs is the principal diagnosis on an inpatient stay, it groups to MS-DRG 564, 566, 565, with relative weights from 0.7374 to 1.4909 depending on complications. Higher weights mean higher Medicare reimbursement.
Is Q76.6 a CC or MCC?
CMS lists Q76.6 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 6 closely related codes in its exclusion list.
Is Q76.6 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other congenital malformations of ribs on inpatient claims. The code appears in the Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) range of the CMS exempt list.
