G91.1
BillableObstructive hydrocephalus
Obstructive hydrocephalus
Coding Notes
Includes
Conditions included under this code
- acquired hydrocephalus
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Also Known As / Clinical Terms
SNOMED CT
- Acquired obstructive hydrocephalus82346000
- Non-communicating hydrocephalus82346000
- Obstructive hydrocephalus230746009
- Hydrocephalus due to and following meningitis230749002
- Postmeningitic hydrocephalus230749002
- Hydrocephalus following traumatic injury230751003
- Post-traumatic hydrocephalus230751003
- Posttraumatic hydrocephalus230751003
- Hydrocephalus associated with late onset aqueduct stenosis253131002
- Sequelae of meningitis404188001
- Obstructive hydrocephalus following traumatic injury410015008
- Post-traumatic non-communicating hydrocephalus410015008
- Post-traumatic obstructive hydrocephalus410015008
- Posttraumatic non-communicating hydrocephalus410015008
- Posttraumatic obstructive hydrocephalus410015008
- Obstructive hydrocephalus due to and following meningitis698737005
- Postmeningitic obstructive hydrocephalus698737005
- Obstructive hydrocephalus due to entrapment of inferior horn of lateral ventricle1148739007
- Obstructive hydrocephalus due to entrapment of temporal horn1148739007
- Dementia due to obstructive hydrocephalus1259675001
- Hydrocephalus due to intracranial neoplasm1263581005
- Hydrocephalus due to fourth ventricle outflow obstruction1263584002
- Hydrocephalus due to obstruction of fourth ventricle outflow1263584002
UMLS
- Hydrocephalus, ObstructiveC0549423
- Hydrocephaly obstructiveC0549423
- Non-Communicating HydrocephalusC0549423
- Non-communicating hydrocephalusC0549423
- Noncommunicating hydrocephalusC0549423
- Obstructive HydrocephalusC0549423
- Obstructive hydrocephalusC0549423
- Obstructive hydrocephalus (disorder)C0549423
- obstructive hydrocephalusC0549423
Frequently Asked Questions
What is ICD-10 code G91.1?
ICD-10-CM code G91.1 represents "Obstructive hydrocephalus". It is a billable/specific code that can be used on a claim.
Is G91.1 a billable code?
Yes, G91.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is G91.1 in?
G91.1 is in Chapter 6: Diseases of the Nervous System (codes G00-G99).
What codes cannot be used with G91.1?
G91.1 has Excludes1 notes indicating codes that cannot be used together with it, including: Arnold-Chiari syndrome with hydrocephalus (Q07.-); congenital hydrocephalus (Q03.-); spina bifida with hydrocephalus (Q05.-).
What SNOMED CT codes does G91.1 map to?
G91.1 maps to 12 SNOMED CT concepts: 82346000, 1259675001, 253131002, 230749002, 1263584002, and 7 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for G91.1?
G91.1 is linked to 1 UMLS Concept Unique Identifier: C0549423. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.