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ICD-10-CM 2027 diagnosis code

G43.609Persistent migraine aura with cerebral infarction, not intractable, without status migrainosus

✓ Billable / specificCC — complication/comorbidity

G43.609 is a valid, billable ICD-10-CM code for persistent migraine aura with cerebral infarction, not intractable, without status migrainosus. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Perst migraine aura w cereb infrc, not ntrct, w/o stat migr

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About G43.609

G43.609 is the ICD-10-CM diagnosis code for persistent migraine aura with cerebral infarction, not intractable, without status migrainosus. It belongs to category G43 (migraine), block G40-G47 (episodic and paroxysmal disorders) and chapter 6 (diseases of the nervous system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within G43.60, choose G43.609 (without status migrainosus) only when documentation doesn't support a more specific option: with status migrainosus (G43.601).

Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 102 (Headaches with MCC, relative weight 1.1201) and DRG 103 (Headaches without MCC, relative weight 0.822), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 346.60 (persistent migraine aura with cerebral infarction, without mention of intractable migraine without mention of status migrainosus).

Notes that apply from higher levels

Instructions written at a parent level also apply to G43.609.

› From G43.6 Persistent migraine aura with cerebral infarction
Code also
  • the type of cerebral infarction (I63.-)
› From G43 Migraine
Note
  • the following terms are to be considered equivalent to intractable: pharmacoresistant (pharmacologically resistant), treatment resistant, refractory (medically) and poorly controlled
Excludes1
Excludes2
  • headache NOS (R51.9)
  • headache syndromes (G44.-)
Use additional code
  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Broader instructions also apply from Chapter 6: Diseases of the nervous system.

Alphabetic index entries

5 entries

Terms in the official ICD-10-CM index that lead to G43.609.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 01 · Diseases and Disorders of the Nervous System

ICD-9-CM equivalent

Converter →
  • 346.60Persistent migraine aura with cerebral infarction, without mention of intractable migraine without mention of status migrainosusexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about G43.609

Is G43.609 billable?

Yes. G43.609 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can G43.609 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict G43.609 as a principal diagnosis.

Is G43.609 a CC or MCC?

G43.609 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does G43.609 group to?

G43.609 is used in the MS-DRG v44.0 logic for MS-DRG 102 (Headaches with MCC) and MS-DRG 103 (Headaches without MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for G43.609?

The CMS General Equivalence Mappings map G43.609 to ICD-9-CM 346.60.