G47.31 Primary central sleep apnea

Billable ICD-10-CM code, FY2026.

Applicable to

• Idiopathic central sleep apnea

Applies from G47 Sleep disorders

Excludes2 (not included here)

• nightmares (F51.5)
• nonorganic sleep disorders (F51.-)
• sleep terrors (F51.4)
• sleepwalking (F51.3)

Applies from G47.3 Sleep apnea

Excludes1 (never code together)

• apnea NOS (R06.81)
• Cheyne-Stokes breathing (R06.3)
• pickwickian syndrome (E66.2)
• sleep apnea of newborn (P28.3-)

Code also

• any associated underlying condition

MS-DRG index

Defines the logic of DRG(s) 011-013 in MDC PRE.

Approximate ICD-9-CM (GEMs)

• 327.21 Primary central sleep apnea

Code annotations containing back-references to G47.31

Back-references to G47.3

• Type 2 Excludes: G47.0 Insomnia ("sleep apnea (G47.3-)")
• Type 2 Excludes: G47.1 Hypersomnia ("sleep apnea (G47.3-)")
• Code Also: I27.23 Pulmonary hypertension due to lung diseases and hypoxia ("sleep apnea (G47.3-)")
• Type 2 Excludes: J98 Other respiratory disorders ("sleep apnea (G47.3-)")
• Type 1 Excludes: R06.81 Apnea, not elsewhere classified ("sleep apnea (G47.3-)")
• Type 1 Excludes: Z03.83 Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out ("sleep apnea (G47.3-)")

Back-references to G47

• Type 2 Excludes: F51 Sleep disorders not due to a substance or known physiological condition ("organic sleep disorders (G47.-)")

Diagnosis Index entries for G47.31

• Apnea, apneic (of) (spells) › sleep › central (primary)
• Apnea, apneic (of) (spells) › sleep › central (primary) › idiopathic
• Apnea, apneic (of) (spells) › sleep › primary central

Nearby codes

• G47.26 Circadian rhythm sleep disorder, shift work type
• G47.27 Circadian rhythm sleep disorder in conditions classified elsewhere
• G47.29 Other circadian rhythm sleep disorder
• G47.3 Sleep apnea
• G47.30 Sleep apnea, unspecified
• G47.31 Primary central sleep apnea (this code)
• G47.32 High altitude periodic breathing
• G47.33 Obstructive sleep apnea (adult) (pediatric)
• G47.34 Idiopathic sleep related nonobstructive alveolar hypoventilation
• G47.35 Congenital central alveolar hypoventilation syndrome
• G47.36 Sleep related hypoventilation in conditions classified elsewhere