2027 ICD-10-CM Diagnosis Code Q89.9Congenital malformation, unspecified
ICD-10-CM Codes›Q00-Q99›Q80-Q89›Q89
- Billable — Valid for Submission
- POA Exempt
- Chronic Condition
Q89.9 is a billable ICD-10-CM diagnosis code for congenital malformation, unspecified. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified congenital anomalies.
Code Identity
Code Classification
Present on Admission (POA)Billing
Q89.9 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Other congenital malformations (Q80-Q89).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Amegakaryocytic thrombocytopenia
- Amegakaryocytic thrombocytopenia with congenital malformation
- Congenital abnormal shape of rib
- Congenital anomaly of back
- Congenital anomaly of mother complicating pregnancy
- Congenital deformity
- Congenital disease
- Congenital malformation
- Congenital malformation syndrome
- Congenital pectus carinatum
- Congenital porencephaly
- Congenital sequelae of disorders
- Deformity
- Dysmorphism
- Dysmorphism, pectus carinatum, joint laxity syndrome
- Dysmorphism, short stature, deafness, disorder of sex development syndrome
- Malformation sequence
- Pectus carinatum
- Pectus deformity of chest
- Porencephaly, cerebellar hypoplasia, internal malformations syndrome
- Pulmonary hypertension due to developmental abnormality
- Single congenital anomaly
- Spinocerebellar ataxia dysmorphism syndrome
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q89.9: its own notes plus those printed at 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.
- Congenital anomaly NOS
- Congenital deformity 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.
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.
Abnormal, abnormality, abnormalities See Also: Anomaly;
anatomical relationship Q89.9
Defect, defective Q89.9
Deformity Q89.9
abdomen, congenital Q89.9
congenital Q89.9
Embryopathia NOS Q89.9
Malformation (congenital) See Also: Anomaly;
umbilicus Q89.9
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Congenital Abnormalities
malformations of organs or body parts during development in utero.
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 Q89.9 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q89.9Overview
What is the ICD-10 code for congenital malformation, unspecified?
The ICD-10-CM code for congenital malformation, unspecified is Q89.9 (sometimes written as Q899). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q89.9 (Other congenital malformations, not elsewhere classified) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report congenital malformation, unspecified on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q89.9 group to?
When congenital malformation, unspecified is the principal diagnosis on an inpatient stay, it groups to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.
Is Q89.9 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 congenital malformation, unspecified on inpatient claims. The code appears in the Other congenital malformations (Q80-Q89) range of the CMS exempt list.
What is the ICD-9 equivalent of Q89.9?
Under the General Equivalence Mappings, congenital malformation, unspecified converts to ICD-9-CM 759.9 (congenital anomaly NOS). The mapping is a direct match.
