ICDcodes.org
FY2027

Q27.9 — Congenital malformation of peripheral vascular system, unspecified

BillableUnspecified

Is Q27.9 billable?

Yes, but Q27.9 is an unspecified code. Q27.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, Q27.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting Q27.9 — the more specific alternatives are listed below.

Q27.9 at a glance

CodeQ27.9
DescriptionCongenital malformation of peripheral vascular system, unspecified
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does Q27.9 group to?

Q27.9 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 299Peripheral Vascular Disorders with MCCmedical
  • 300Peripheral Vascular Disorders with CCmedical
  • 301Peripheral Vascular Disorders without CC/MCCmedical

How is Q27.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to Q27.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Distribution vessel, atypical
  • Accessory › blood vessels NEC (congenital)
  • Agenesis › artery
  • Agenesis › vein
  • Anomaly, anomalous › artery (congenital) (unspecified type)
  • Anomaly, anomalous › capillary (congenital) (unspecified type)
  • Anomaly, anomalous › peripheral vascular system (congenital) (unspecified type)
  • Anomaly, anomalous › vascular (congenital) (unspecified type)
  • Anomaly, anomalous › vein (congenital) (unspecified type)
  • Anomaly, anomalous › vessel (congenital) (unspecified type)
  • Deformity › arteryNOS
  • Deformity › vein

Inclusion terms

Alternative wording in documentation that is classified to Q27.9.

  • Anomaly of artery or vein NOS

Excludes2 — not included here — inherited from Chapter 17

The conditions below are not part of Q27.9, but a patient may have both at the same time. When documentation supports it, Q27.9 and the excluded code may both be reported.

  • inborn errors of metabolism (E70-E88)

Excludes2 — not included here — inherited from Q27

The conditions below are not part of Q27.9, but a patient may have both at the same time. When documentation supports it, Q27.9 and the excluded code may both be reported.

  • anomalies of cerebral and precerebral vessels (Q28.0-Q28.3)
  • anomalies of coronary vessels (Q24.5)
  • anomalies of pulmonary artery (Q25.5-Q25.7)
  • congenital retinal aneurysm (Q14.1)
  • hemangioma and lymphangioma (D18.-)

How long has Q27.9 existed?

Q27.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which conditions are coded to Q27.9?

What other codes are in the Q27 family? (6)