ICD-10-CM Code Q40.0
Congenital hypertrophic pyloric stenosis
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.Q40.0 is a billable ICD code used to specify a diagnosis of congenital hypertrophic pyloric stenosis. A 'billable code' is detailed enough to be used to specify a medical diagnosis.
POA Indicators on CMS form 4010A are as follows:
| Indicator | Meaning | CMS Will Pay CC/MCC DRG Costs |
|---|---|---|
| Y | Diagnosis was present at time of inpatient admission | Yes |
| N | Diagnosis was not present at time of inpatient admission | No |
| U | Documentation insufficient to determine if the condition was present at the time of inpatient admission. | No |
| W | Clinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission. | Yes |
| 1 | Exempt from POA reporting | No |
The ICD code Q400 is used to code Pyloric stenosis
Pyloric stenosis or pylorostenosis is narrowing (stenosis) of the opening from the stomach to the first part of the small intestine known as the duodenum, due to enlargement (hypertrophy) of the muscle surrounding this opening (the pylorus, meaning "gate"), which spasms when the stomach empties. This condition causes severe projectile non-bilious vomiting. It most often occurs in the first few months of life, when it may thus be more specifically labeled as infantile hypertrophic pyloric stenosis. The thickened pylorus is felt classically as an olive-shaped mass in the middle upper part or right upper quadrant of the infant's abdomen. In pyloric stenosis, it is uncertain whether there is a true congenital anatomic narrowing or whether there is merely a functional hypertrophy of the pyloric sphincter muscle. This condition typically develops in male babies in the first 2 to 6 weeks of life.
| Specialty: | General Surgery |
| MeSH Codes: | D046248, D046248 |
| ICD 9 Codes: | 537.0, 750.5 |
Outline of stomach, showing its anatomical landmarks, including the pylorus.
Coding Notes for Q40.0 Info for medical coders on how to properly use this ICD-10 code
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Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive. - Congenital or infantile constriction
- Congenital or infantile hypertrophy
- Congenital or infantile spasm
- Congenital or infantile stenosis
- Congenital or infantile stricture
MS-DRG Mapping
- DRG Group #393-395 - Other digestive system diagnoses with MCC.
- DRG Group #393-395 - Other digestive system diagnoses with CC.
- DRG Group #393-395 - Other digestive system diagnoses without CC or MCC.
Related Concepts SNOMET-CT
- Congenital pyloric spasm (disorder)
- < 1.0 year
- Age at onset of clinical finding (observable entity)
ICD-10-CM Alphabetical Index References for 'Q40.0 - Congenital hypertrophic pyloric stenosis'
The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Q40.0. Click on any term below to browse the alphabetical index.
Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)
This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 750.5 was previously used, Q40.0 is the appropriate modern ICD10 code.
Parent Code: Q40 - Other congenital malformations of upper alimentary tract