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  3. Diagnosis Codes in MS-DRG 103 - Headaches Without MCC

Diagnosis Codes in MS-DRG 103 - Headaches Without MCC

The Medicare Severity Diagnosis-Related Group (MS-DRG) is a patient classification system used to categorize hospital cases based on clinical similarity and expected resource use. MS-DRGs organize all possible principal diagnoses into mutually exclusive groups known as Major Diagnostic Categories (MDCs), which help determine reimbursement under the Medicare Inpatient Prospective Payment System.

This section lists the diagnosis codes included in MS-DRG V42.0: Headaches without MCC from October 1, 2024, through September 30, 2025.

MS-DRG: 103

MS-DRG Title: Headaches without MCC

MCD: 01

Relative Weight: 0.8502 Relative Weight
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Geometric LOS: 0.85 Geometric Length of Stay
The geometric mean length of stay (GMLOS) is used by Medicare to calculate the reimbursement for patients whose medical treatment takes a much longer or shorter time than average.

Arithmetic LOS: 2.30 Arithmetic Length of Stay
The average length of stay (ALOS) reflects the average number of days a patient spends in a hospital for each admission.

  1. F07.8 - Other personality and behavioral disorders due to kn
  2. G43.00 - Migraine without aura, not intractable
  3. G43.01 - Migraine without aura, intractable
  4. G43.10 - Migraine with aura, not intractable
  5. G43.11 - Migraine with aura, intractable
  6. G43.40 - Hemiplegic migraine, not intractable
  7. G43.41 - Hemiplegic migraine, intractable
  8. G43.50 - Persistent migraine aura without cerebral infarctio
  9. G43.51 - Persistent migraine aura without cerebral infarctio
  10. G43.60 - Persistent migraine aura with cerebral infarction,
  11. G43.61 - Persistent migraine aura with cerebral infarction,
  12. G43.70 - Chronic migraine without aura, not intractable
  13. G43.71 - Chronic migraine without aura, intractable
  14. G43.80 - Other migraine, not intractable
  15. G43.81 - Other migraine, intractable
  16. G43.82 - Menstrual migraine, not intractable
  17. G43.83 - Menstrual migraine, intractable
  18. G43.90 - Migraine, unspecified, not intractable
  19. G43.91 - Migraine, unspecified, intractable
  20. G43.A - Cyclical vomiting
  21. G43.B - Ophthalmoplegic migraine
  22. G43.C - Periodic headache syndromes in child or adult
  23. G43.D - Abdominal migraine
  24. G43.E0 - Chronic migraine with aura, not intractable
  25. G43.E1 - Chronic migraine with aura, intractable
  26. G44 - Other headache syndromes
  27. G44.00 - Cluster headache syndrome, unspecified
  28. G44.01 - Episodic cluster headache
  29. G44.02 - Chronic cluster headache
  30. G44.03 - Episodic paroxysmal hemicrania
  31. G44.04 - Chronic paroxysmal hemicrania
  32. G44.05 - Short lasting unilateral neuralgiform headache with
  33. G44.09 - Other trigeminal autonomic cephalgias (TAC)
  34. G44.20 - Tension-type headache, unspecified
  35. G44.21 - Episodic tension-type headache
  36. G44.22 - Chronic tension-type headache
  37. G44.30 - Post-traumatic headache, unspecified
  38. G44.31 - Acute post-traumatic headache
  39. G44.32 - Chronic post-traumatic headache
  40. G44.4 - Drug-induced headache, not elsewhere classified
  41. G44.5 - Complicated headache syndromes
  42. G44.8 - Other specified headache syndromes
  43. G93 - Other disorders of brain
  44. G97 - Intraoperative and postprocedural complications and di
  45. I67 - Other cerebrovascular diseases
  46. I68 - Cerebrovascular disorders in diseases classified elsew
  47. R51 - Headache

  • F07.8 - Other personality and behavioral disorders due to known physiological condition

    • F07.81 - Postconcussional syndrome

  • G43.00 - Migraine without aura, not intractable

    • G43.001 - Migraine without aura, not intractable, with status migrainosus

    • G43.009 - Migraine without aura, not intractable, without status migrainosus

  • G43.01 - Migraine without aura, intractable

    • G43.011 - Migraine without aura, intractable, with status migrainosus

    • G43.019 - Migraine without aura, intractable, without status migrainosus

  • G43.10 - Migraine with aura, not intractable

    • G43.101 - Migraine with aura, not intractable, with status migrainosus

    • G43.109 - Migraine with aura, not intractable, without status migrainosus

  • G43.11 - Migraine with aura, intractable

    • G43.111 - Migraine with aura, intractable, with status migrainosus

    • G43.119 - Migraine with aura, intractable, without status migrainosus

  • G43.40 - Hemiplegic migraine, not intractable

    • G43.401 - Hemiplegic migraine, not intractable, with status migrainosus

    • G43.409 - Hemiplegic migraine, not intractable, without status migrainosus

  • G43.41 - Hemiplegic migraine, intractable

    • G43.411 - Hemiplegic migraine, intractable, with status migrainosus

    • G43.419 - Hemiplegic migraine, intractable, without status migrainosus

  • G43.50 - Persistent migraine aura without cerebral infarction, not intractable

    • G43.501 - Persistent migraine aura without cerebral infarction, not intractable, with status migrainosus

    • G43.509 - Persistent migraine aura without cerebral infarction, not intractable, without status migrainosus

  • G43.51 - Persistent migraine aura without cerebral infarction, intractable

    • G43.511 - Persistent migraine aura without cerebral infarction, intractable, with status migrainosus

    • G43.519 - Persistent migraine aura without cerebral infarction, intractable, without status migrainosus

  • G43.60 - Persistent migraine aura with cerebral infarction, not intractable

    • G43.601 - Persistent migraine aura with cerebral infarction, not intractable, with status migrainosus

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

  • G43.61 - Persistent migraine aura with cerebral infarction, intractable

    • G43.611 - Persistent migraine aura with cerebral infarction, intractable, with status migrainosus

    • G43.619 - Persistent migraine aura with cerebral infarction, intractable, without status migrainosus

  • G43.70 - Chronic migraine without aura, not intractable

    • G43.701 - Chronic migraine without aura, not intractable, with status migrainosus

    • G43.709 - Chronic migraine without aura, not intractable, without status migrainosus

  • G43.71 - Chronic migraine without aura, intractable

    • G43.711 - Chronic migraine without aura, intractable, with status migrainosus

    • G43.719 - Chronic migraine without aura, intractable, without status migrainosus

  • G43.80 - Other migraine, not intractable

    • G43.801 - Other migraine, not intractable, with status migrainosus

    • G43.809 - Other migraine, not intractable, without status migrainosus

  • G43.81 - Other migraine, intractable

    • G43.811 - Other migraine, intractable, with status migrainosus

    • G43.819 - Other migraine, intractable, without status migrainosus

  • G43.82 - Menstrual migraine, not intractable

    • G43.821 - Menstrual migraine, not intractable, with status migrainosus

    • G43.829 - Menstrual migraine, not intractable, without status migrainosus

  • G43.83 - Menstrual migraine, intractable

    • G43.831 - Menstrual migraine, intractable, with status migrainosus

    • G43.839 - Menstrual migraine, intractable, without status migrainosus

  • G43.90 - Migraine, unspecified, not intractable

    • G43.901 - Migraine, unspecified, not intractable, with status migrainosus

    • G43.909 - Migraine, unspecified, not intractable, without status migrainosus

  • G43.91 - Migraine, unspecified, intractable

    • G43.911 - Migraine, unspecified, intractable, with status migrainosus

    • G43.919 - Migraine, unspecified, intractable, without status migrainosus

  • G43.A - Cyclical vomiting

    • G43.A0 - Cyclical vomiting, in migraine, not intractable

    • G43.A1 - Cyclical vomiting, in migraine, intractable

  • G43.B - Ophthalmoplegic migraine

    • G43.B0 - Ophthalmoplegic migraine, not intractable

    • G43.B1 - Ophthalmoplegic migraine, intractable

  • G43.C - Periodic headache syndromes in child or adult

    • G43.C0 - Periodic headache syndromes in child or adult, not intractable

    • G43.C1 - Periodic headache syndromes in child or adult, intractable

  • G43.D - Abdominal migraine

    • G43.D0 - Abdominal migraine, not intractable

    • G43.D1 - Abdominal migraine, intractable

  • G43.E0 - Chronic migraine with aura, not intractable

    • G43.E01 - Chronic migraine with aura, not intractable, with status migrainosus

    • G43.E09 - Chronic migraine with aura, not intractable, without status migrainosus

  • G43.E1 - Chronic migraine with aura, intractable

    • G43.E11 - Chronic migraine with aura, intractable, with status migrainosus

    • G43.E19 - Chronic migraine with aura, intractable, without status migrainosus

  • G44 - Other headache syndromes

    • G44.1 - Vascular headache, not elsewhere classified

  • G44.00 - Cluster headache syndrome, unspecified

    • G44.001 - Cluster headache syndrome, unspecified, intractable

    • G44.009 - Cluster headache syndrome, unspecified, not intractable

  • G44.01 - Episodic cluster headache

    • G44.011 - Episodic cluster headache, intractable

    • G44.019 - Episodic cluster headache, not intractable

  • G44.02 - Chronic cluster headache

    • G44.021 - Chronic cluster headache, intractable

    • G44.029 - Chronic cluster headache, not intractable

  • G44.03 - Episodic paroxysmal hemicrania

    • G44.031 - Episodic paroxysmal hemicrania, intractable

    • G44.039 - Episodic paroxysmal hemicrania, not intractable

  • G44.04 - Chronic paroxysmal hemicrania

    • G44.041 - Chronic paroxysmal hemicrania, intractable

    • G44.049 - Chronic paroxysmal hemicrania, not intractable

  • G44.05 - Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT)

    • G44.051 - Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), intractable

    • G44.059 - Short lasting unilateral neuralgiform headache with conjunctival injection and tearing (SUNCT), not intractable

  • G44.09 - Other trigeminal autonomic cephalgias (TAC)

    • G44.091 - Other trigeminal autonomic cephalgias (TAC), intractable

    • G44.099 - Other trigeminal autonomic cephalgias (TAC), not intractable

  • G44.20 - Tension-type headache, unspecified

    • G44.201 - Tension-type headache, unspecified, intractable

    • G44.209 - Tension-type headache, unspecified, not intractable

  • G44.21 - Episodic tension-type headache

    • G44.211 - Episodic tension-type headache, intractable

    • G44.219 - Episodic tension-type headache, not intractable

  • G44.22 - Chronic tension-type headache

    • G44.221 - Chronic tension-type headache, intractable

    • G44.229 - Chronic tension-type headache, not intractable

  • G44.30 - Post-traumatic headache, unspecified

    • G44.301 - Post-traumatic headache, unspecified, intractable

    • G44.309 - Post-traumatic headache, unspecified, not intractable

  • G44.31 - Acute post-traumatic headache

    • G44.311 - Acute post-traumatic headache, intractable

    • G44.319 - Acute post-traumatic headache, not intractable

  • G44.32 - Chronic post-traumatic headache

    • G44.321 - Chronic post-traumatic headache, intractable

    • G44.329 - Chronic post-traumatic headache, not intractable

  • G44.4 - Drug-induced headache, not elsewhere classified

    • G44.40 - Drug-induced headache, not elsewhere classified, not intractable

    • G44.41 - Drug-induced headache, not elsewhere classified, intractable

  • G44.5 - Complicated headache syndromes

    • G44.51 - Hemicrania continua

    • G44.52 - New daily persistent headache (NDPH)

    • G44.53 - Primary thunderclap headache

    • G44.59 - Other complicated headache syndrome

  • G44.8 - Other specified headache syndromes

    • G44.81 - Hypnic headache

    • G44.82 - Headache associated with sexual activity

    • G44.83 - Primary cough headache

    • G44.84 - Primary exertional headache

    • G44.85 - Primary stabbing headache

    • G44.86 - Cervicogenic headache

    • G44.89 - Other headache syndrome

  • G93 - Other disorders of brain

    • G93.2 - Benign intracranial hypertension

  • G97 - Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified

    • G97.1 - Other reaction to spinal and lumbar puncture

  • I67 - Other cerebrovascular diseases

    • I67.7 - Cerebral arteritis, not elsewhere classified

  • I68 - Cerebrovascular disorders in diseases classified elsewhere

    • I68.2 - Cerebral arteritis in other diseases classified elsewhere

  • R51 - Headache

    • R51.0 - Headache with orthostatic component, not elsewhere classified

    • R51.9 - Headache, unspecified