Table 1

Validation of Colectomy Procedural Codes
Procedural codes Definition Total Codes (n) Colectomy (n)

PPV

(95% CI)

45.7 or 45.8* Open and other partial excision of large intestine or total intra-abdominal colectomy 294 275

0.94

[0.90–0.96]

1.NM.87 Excision partial, large intestine 45 20

0.44

[0.31–0.59]

1.NM.89 Excision total, large intestine endoscopic 52 47

0.90

[0.79–0.96]

1.NM.91 Excision radical, large intestine 1 1

1.00

[0.21–1.00]

1.NQ.89 or 1.NQ.90α Excision total, rectum or excision total with reconstruction, rectum using open approach with ileum 273 228

0.84

[0.79–0.87]

All colectomies 665 571

0.86

[0.830.88]

* 1 chart identified coded with both 45.7 and 45.8 codes.

α 3 charts identified coded with both 1.NQ.89 and 1.NQ.90 codes.

Ma et al.

Ma et al. BMC Gastroenterology 2012 12:39   doi:10.1186/1471-230X-12-39

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