2027 ICD-10-CM Diagnosis Code Q86.8Other congenital malformation syndromes due to known exogenous causes
ICD-10-CM Codes›Q00-Q99›Q80-Q89›Q86
- Billable — Valid for Submission
- POA Exempt
- Chronic Condition
Q86.8 is a billable ICD-10-CM diagnosis code for other congenital malformation syndromes due to known exogenous causes. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 794. 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
Q86.8 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.
- Congenital malformation caused by cytotoxic agents
- Congenital malformation caused by valproic acid
- Fetal anomaly caused by antihypertensive drug
- Fetal benzodiazepine syndrome
- Fetal carbamazepine syndrome
- Fetal cocaine syndrome
- Fetal disorder caused by anticonvulsant via placental transfer
- Fetal iodine syndrome
- Fetal methyl mercury syndrome
- Fetal minoxidil syndrome
- Fetal misoprostol syndrome
- Fetal primidone syndrome
- Fetal toluene syndrome
- Fetal valproate syndrome
- Indomethacin embryofetopathy
- Isotretinoin syndrome
- Maternal PKU fetal effect
- Methimazole embryofetopathy
- Multiple malformation syndrome due to non-infectious environmental agents
- Mycophenolate mofetil embryopathy
- Narcotic embryopathy
- Phenobarbital embryopathy
- Retinoid embryopathy
- Thalidomide embryopathy syndrome
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Q86.8: its own notes plus those printed at Q86 and Chapter 17. A note printed at a category, block or chapter applies to every code under it.
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.
Syndrome See Also: Disease;
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 Q86.8 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Q86.8Overview
What is the ICD-10 code for other congenital malformation syndromes due to known exogenous causes?
The ICD-10-CM code for other congenital malformation syndromes due to known exogenous causes is Q86.8 (sometimes written as Q868). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Q86.8 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other congenital malformation syndromes due to known exogenous causes on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Q86.8 group to?
When other congenital malformation syndromes due to known exogenous causes is the principal diagnosis on an inpatient stay, it groups to MS-DRG 794 (neonate with Other Significant Problems), which carries a relative weight of 1.4934. Higher weights mean higher Medicare reimbursement.
Is Q86.8 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 malformation syndromes due to known exogenous causes 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 Q86.8?
Under the General Equivalence Mappings, other congenital malformation syndromes due to known exogenous causes converts to ICD-9-CM 760.79 (nox sub NEC aff NB/fetus). The mapping is approximate, so confirm the match fits the documentation.
