ICD-10-CM 2027
ICD-10 code for collapse
From the official ICD-10-CM alphabetic index entry “Collapse”. Page updated September 29, 2026.
About coding collapse
The ICD-10-CM code for collapse is R55 (Syncope and collapse). The official index lists 68 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on R55.
Don't report R55 together with the conditions in its Excludes1 note: cardiogenic shock (R57.0), carotid sinus syncope (G90.01), heat syncope (T67.1), neurocirculatory asthenia (F45.8) and 9 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 312 (Syncope and Collapse, relative weight 0.866), in MDC 05 (Diseases and Disorders of the Circulatory 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.
More specific collapse codes (official index)
- adrenal E27.2 — Addisonian crisis
- cardiorespiratory R57.0 — Cardiogenic shock
- cardiovascular R57.0 — Cardiogenic shock
- newborn P29.89 — Other cardiovascular disorders originating in the perinatal period
- circulatory (peripheral) R57.9 — Shock, unspecified
- during or after labor and delivery O75.1 — Shock during or following labor and delivery
- following ectopic or molar pregnancy O08.3 — Shock following ectopic and molar pregnancy
- newborn P29.89 — Other cardiovascular disorders originating in the perinatal period
- during or
- after labor and delivery O75.1 — Shock during or following labor and delivery
- resulting from a procedure, not elsewhere classified T81.10 — Postprocedural shock unspecified
- external ear canal
- general R55 — Syncope and collapse
- heart
- heat T67.1 — Heat syncope
- hysterical F44.89 — Other dissociative and conversion disorders
- labyrinth, membranous (congenital) Q16.5 — Congenital malformation of inner ear
- lung (massive) J98.19 — Other pulmonary collapse
- pressure due to anesthesia (general) (local) or other sedation T88.2 — Shock due to anesthesia
- during labor and delivery O74.1 — Other pulmonary complications of anesthesia during labor and delivery
- in pregnancy O29.02 — Pressure collapse of lung due to anesthesia during pregnancy
- postpartum, puerperal O89.09 — Other pulmonary complications of anesthesia during the puerperium
- myocardial
- nasal valve J34.829 — Nasal valve collapse, unspecified
- external J34.8210 — External nasal valve collapse, unspecified
- dynamic J34.8212 — External nasal valve collapse, dynamic
- static J34.8211 — External nasal valve collapse, static
- internal J34.8200 — Internal nasal valve collapse, unspecified
- dynamic J34.8202 — Internal nasal valve collapse, dynamic
- static J34.8201 — Internal nasal valve collapse, static
- nervous F48.8 — Other specified nonpsychotic mental disorders
- neurocirculatory F45.8 — Other somatoform disorders
- nose M95.0 — Acquired deformity of nose
- lower sidewall or nostril, on inspiration J34.8212 — External nasal valve collapse, dynamic
- upper, middle sidewall, on inspiration J34.8202 — Internal nasal valve collapse, dynamic
- postoperative T81.10 — Postprocedural shock unspecified
- pulmonary J98.19 — Other pulmonary collapse
- newborn
- trachea J39.8 — Other specified diseases of upper respiratory tract
- tracheobronchial J98.09 — Other diseases of bronchus, not elsewhere classified
- valvular
- vascular (peripheral) R57.9 — Shock, unspecified
- during or after labor and delivery O75.1 — Shock during or following labor and delivery
- following ectopic or molar pregnancy O08.3 — Shock following ectopic and molar pregnancy
- newborn P29.89 — Other cardiovascular disorders originating in the perinatal period
- vertebra M48.50 — Collapsed vertebra, not elsewhere classified, site unspecified
- cervical region M48.52 — Collapsed vertebra, not elsewhere classified, cervical region
- cervicothoracic region M48.53 — Collapsed vertebra, not elsewhere classified, cervicothoracic region
- in (due to)
- neoplasm (metastasis) M84.58 — Pathological fracture in neoplastic disease, other specified site
- osteoporosis M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- cervical region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- cervicothoracic region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- lumbar region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- lumbosacral region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- multiple sites M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- occipito-atlanto-axial region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- sacrococcygeal region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- thoracic region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- thoracolumbar region M80.88 — Other osteoporosis with current pathological fracture, vertebra(e)
- specified disease NEC M48.50 — Collapsed vertebra, not elsewhere classified, site unspecified
- cervical region M48.52 — Collapsed vertebra, not elsewhere classified, cervical region
- cervicothoracic region M48.53 — Collapsed vertebra, not elsewhere classified, cervicothoracic region
- lumbar region M48.56 — Collapsed vertebra, not elsewhere classified, lumbar region
- lumbosacral region M48.57 — Collapsed vertebra, not elsewhere classified, lumbosacral region
- occipito-atlanto-axial region M48.51 — Collapsed vertebra, not elsewhere classified, occipito-atlanto-axial region
- sacrococcygeal region M48.58 — Collapsed vertebra, not elsewhere classified, sacral and sacrococcygeal region
- thoracic region M48.54 — Collapsed vertebra, not elsewhere classified, thoracic region
- thoracolumbar region M48.55 — Collapsed vertebra, not elsewhere classified, thoracolumbar region
- lumbar region M48.56 — Collapsed vertebra, not elsewhere classified, lumbar region
- lumbosacral region M48.57 — Collapsed vertebra, not elsewhere classified, lumbosacral region
- occipito-atlanto-axial region M48.51 — Collapsed vertebra, not elsewhere classified, occipito-atlanto-axial region
- sacrococcygeal region M48.58 — Collapsed vertebra, not elsewhere classified, sacral and sacrococcygeal region
- thoracic region M48.54 — Collapsed vertebra, not elsewhere classified, thoracic region
- thoracolumbar region M48.55 — Collapsed vertebra, not elsewhere classified, thoracolumbar region
Don't confuse with (Excludes1 for R55)
- cardiogenic shock (R57.0)
- carotid sinus syncope (G90.01)
- heat syncope (T67.1)
- neurocirculatory asthenia (F45.8)
- neurogenic orthostatic hypotension (G90.3)
- orthostatic hypotension (I95.1)
- postprocedural shock (T81.1-)
- psychogenic syncope (F48.8)
- shock NOS (R57.9)
- shock complicating or following abortion or ectopic or molar pregnancy (O00-O07, O08.3)
- shock complicating or following labor and delivery (O75.1)
- Stokes-Adams attack (I45.9)
- unconsciousness NOS (R40.2-)
Common questions about collapse ICD-10 codes
What is the ICD-10 code for collapse?
- R55 — Syncope and collapse. More specific codes apply when the documentation supports them: E27.2, R57.0, R57.0, P29.89 and others below.
What is the ICD-10 code for adrenal collapse?
- E27.2 — Addisonian crisis.
What is the ICD-10 code for cardiorespiratory collapse?
- R57.0 — Cardiogenic shock.
What is the ICD-10 code for cardiovascular collapse?
- R57.0 — Cardiogenic shock.
What is the ICD-10 code for circulatory collapse?
- R57.9 — Shock, unspecified.
What is the ICD-10 code for general collapse?
- R55 — Syncope and collapse.
What is the ICD-10 code for heat collapse?
- T67.1 — Heat syncope (header code; choose a more specific subcode).
Is R55 billable?
- Yes. R55 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can R55 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict R55 as a principal diagnosis.
Is R55 a CC or MCC?
- No. R55 is neither a CC nor an MCC under MS-DRG v44.0.