2006 ICD-9 codes - 5 of 7

426.82 Long QT syndrome is a group of congenital and acquired diseases in which the electrocardiography QT interval is longer than established measurements for  and sex and age. The presence of long QT intervals are indicators for arrhythmias and sudden death.

443.82 Erythromelalgia is a rare disorder characterized by burning pain and warmth and redness of the extremities.

Edentulism codes

Edentulism means "Without teeth" It is a complete loss of all natural teeth which can substantially reduce quality of life, self-image, and daily functioning.

The American College of Prosthodontists has developed a classification system for complete edentulism based on diagnostic findings.

These guidelines may help practitioners determine appropriate treatments for their patients. Four categories are defined, ranging from Class I to Class IV, 

Each class is differentiated by specific diagnostic criteria. This system is designed for use by dental professionals who are involved in the diagnosis of patients requiring treatment for complete edentulism. 

The new edentulism codes are organized by complete versus partial and Class (I - IV). Note that the unspecified fifth digit code is a "0" code rather than a "9" code.

525.40 Complete edentulism, unspecified
525.41 Complete edentulism, class I
525.42 Complete edentulism, class II
525.43 Complete edentulism, class III
525.44 Complete edentulism, class IV

525.50 Partial edentulism, unspecified
525.51 Partial edentulism, class I
525.52 Partial edentulism, class II
525.53 Partial edentulism, class III
525.54 Partial edentulism, class IV

Peritonitis and peritoneal abscess disorders.

567.21 Peritonitis (acute) generalized
567.22 Peritoneal abscess
567.23 Spontaneous bacterial peritonitis
567.29 Other suppurative peritonitis
567.89 Other specified peritonitis

Peritoneal means having to do with the peritoneum (the tissue that lines the abdominal wall and covers most of the organs in the abdomen). Peritonitis is an inflammation ('-itis') of the peritoneum.

Code 567.31* Psoas muscle abscess is an abscess of one of the muscles of the lower back (the loin). There are two psoas muscles on each side of the back. The larger of the two is called the psoas major and the smaller the psoas minor.

The psoas major originates at the spine around the bottom of the rib cage and runs down to the thigh bone (the femur). The psoas major acts to flex the hip.

The psoas minor also originates at the spine around the bottom of the rib cage but it runs down to the bony pelvis. It acts to flex the lower (lumbar) spine.

The "p" in "psoas" is silent and the emphasis is on the first syllable: so-as. The word "psoas" is Greek for the loins, the muscles of the lower back.

567.3x and 57.8x codes

567.38 Other retroperitoneal abscess
567.39 Other retroperitoneal infections
567.81 Choleperitonitis
567.82 Sclerosing mesenteritis
567.89 Other specified peritonitis

Retroperitoneal means having to do with the area outside or behind the peritoneum, the tissue that lines the abdominal wall and covers most of the organs in the abdomen. Retroperitoneal abscess can be a potentially fatal complication of closed fracture of the pelvis. 

A common treatment for Retroperitoneal abscess is percutaneous abscess drainage (PAD).

Both septated and viscous fluid collections may be successfully treated percutaneously, particularly with the adjunctive use of lytic agents. The simpler the abscess, the more likely PAD will be rapidly successful.

Septated (septal): Cystic hygromas are bilateral, septated, cystic structures, septated cystic hygroma. Septal refers to a septum, a thin wall separating two cavities or masses of softer tissue.

Viscous - All fluids are viscous. However, they differ in "viscosity" The thickness or resistance to flow of a liquid. Viscosity generally decreases as temperature increases.

Lytic - Having to do with lysis. In biology, lysis refers to the disintegration of a cell by disruption of its plasma membrane. Lysis can be caused by chemical or physical means (eg, high-energy sound waves) or by a virus infection.

http://www.med.wayne.edu/diagRadiology/TF/GI/GI07.html

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