2027 ICD-10-CM Diagnosis Code Q78.9Osteochondrodysplasia, unspecified
ICD-10-CM Codes›Q00-Q99›Q65-Q79›Q78
- Billable — Valid for Submission
- POA Exempt
- Chronic Condition
Q78.9 is a billable ICD-10-CM diagnosis code for osteochondrodysplasia, unspecified. 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. 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
Q78.9 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.
- Cataract, growth hormone deficiency, sensory neuropathy, sensorineural hearing loss, skeletal dysplasia syndrome
- Chondrodysplasia
- Chondrodysplasia with disorder of sex development syndrome
- Chondrodysplasia with joint dislocations gPAPP type
- Cognitive impairment, coarse facies, heart defects, obesity, pulmonary involvement, short stature, skeletal dysplasia syndrome
- Congenital osteodystrophy
- Cutis laxa with osteodystrophy
- Deafness with onychodystrophy syndrome
- Dentinogenesis imperfecta
- DOORS syndrome
- Dysplasia with decreased bone density
- Dysplasia with defective mineralization
- Fountain syndrome
- Genetic syndromic childhood obesity
- Goldblatt syndrome
- Hereditary growth hormone deficiency
- Hereditary sensory neuropathy
- Hypoplastic chondrodystrophy
- Lordosis deformity of spine due to congenital skeletal dysplasia
- Ossification anomaly with psychomotor developmental delay syndrome
- Osteochondrodysplasia syndrome
- Osteodystrophy
- Premature ovarian insufficiency
- Pure gonadal dysgenesis
- Pure gonadal dysgenesis 46,XY
- Sclerosing dysplasia of bone, ichthyosis, premature ovarian failure syndrome
- Skeletal dysplasia brachydactyly syndrome
- Skeletal dysplasia with intellectual disability syndrome
- Skeletal dysplasia with wormian bone, multiple fractures, dentinogenesis imperfecta syndrome
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q78.9: its own notes plus those printed at Q78 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.
- Chondrodystrophy NOS
- Osteodystrophy NOS
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.
- congenital myotonic chondrodystrophy (G71.13)
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.
Anosteoplasia Q78.9
Chondrodysplasia Q78.9
Osteochondrodysplasia Q78.9
Osteodystrophy Q78.9
congenital Q78.9
Silfversköld's syndrome Q78.9
Syndrome See Also: Disease;
Silfversköld's Q78.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Osteochondrodysplasias
abnormal development of cartilage and bone.
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 Q78.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q78.9Overview
What is the ICD-10 code for osteochondrodysplasia, unspecified?
The ICD-10-CM code for osteochondrodysplasia, unspecified is Q78.9 (sometimes written as Q789). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q78.9 (Other osteochondrodysplasias) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report osteochondrodysplasia, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q78.9 group to?
When osteochondrodysplasia, unspecified 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 Q78.9 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 osteochondrodysplasia, unspecified on inpatient claims. The code appears in the Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) range of the CMS exempt list.
What is the ICD-9 equivalent of Q78.9?
Under the General Equivalence Mappings, osteochondrodysplasia, unspecified converts to ICD-9-CM 756.50 (osteodystrophy NOS). The mapping is approximate, so confirm the match fits the documentation.
