Obesity-hypoventilation syndrome (Pickwick syndrome)

ICD10 Diagnosis
Dx:	Obesity-hypoventilation syndrome (Pickwick syndrome)
ICD10 code:	E66.2
Pre-ICD10 counterpart:	Sleep Apnea Syndrome
Charlson/ALERT Scale:	none
APACHE Como Component:	none
APACHE Acute Component:	2019-0: Metabolic/Renal NOS, 2019-0: Renal/Metabolic NOS
Start Date:
Stop Date:
External ICD10 Documentation	ICD-10 CM Wikipedia ICD-10 Wikipedia WHO ICD10 documentation ICD10data.com

This diagnosis is a part of ICD10 collection.

• SMW
  • 2019-01-01
  • 2999-12-31
  • E66.2

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Additional Info

Obesity-hypoventilation syndrome (Pickwick syndrome) is a subset of Sleep apnea, obstructive, in which in addition to having apnea with episodes of Hypercapnia (hypercarbia) during sleep. These people also have hypercapnia while awake. As a result, these chronically hypercapnic patients generally have compensatory metabolic Alkalosis (i.e. high serum bicarbonate to counteract the effect of the high pCO2 on blood pH).

• The diagnosis is generally made based on:
  • demonstrated sleep apnea,
  • Obesity, NOS (BMI 30.0 to 39.9) or Obesity, morbid (severe, BMI gte 40),
  • and daytime hypercapnia not explained by other disorders (e.g. severe COPD).

You can include Obesity-hypoventilation syndrome (Pickwick syndrome) as one of the last/lowest priority Admit Diagnosis to capture this problem even though it is not reason for admission.

While we did not allow sleep apnea as a Comorbid Diagnosis in the old codes, this code will be allowed.

Alternate ICD10s to consider coding instead or in addition

• Obesity, NOS (BMI 30.0 to 39.9)
• Obesity, morbid (severe, BMI gte 40)
• Alkalosis

Candidate Combined ICD10 codes

Related CCI Codes

Data Integrity Checks (automatic list)

none found

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