ICD-10 Fifth Edition Codes: Chapters 11 to 15 Comprehensive Study Guide

Module Introduction and Learning Objectives

• Module Overview: This module provides an exhaustive introduction to the $ICD-10$ codes following Chapter $11$ through Chapter $15$. It covers the diseases included in these chapters and the organization of different coding groups.
• Learning Objectives: After completing this module, the student will be able to perform the following:     * Identify diseases of the digestive system, skin, and subcutaneous tissue, including their specific codes.     * Differentiate between diseases of the musculoskeletal system and connective tissue, as well as the specific codes used in that chapter.     * Recognize genitourinary diseases and their respective codes.     * Identify codes for pregnancy, childbirth, and the puerperium.

Chapter 11: Diseases of the Digestive System ($K00$ to $K93$)

• Primary Biological Role: The primary role of the digestive system is to physically and chemically prepare food for absorption.
• The Digestion Process: During digestion, food undergoes several physical and chemical changes. It is ground, torn, chewed, shaken, and combined with saliva and stomach juices.
• Endocrine and Digestive Functions of the Pancreas:     * The pancreas is defined as an endocrine organ because it produces insulin.     * It is simultaneously categorized as a digestive organ because it secretes enzymes specialized for the digestion of proteins, lipids, and carbohydrates.
• Organizational Structure: Coding groups for the digestive system are organized according to the physical site of the disease. These sites include:     * Teeth     * Gums     * Jaw     * Salivary glands     * Oral soft tissues     * Tongue     * Esophagus     * Stomach     * Abdominal cavity     * Intestine     * Colon     * Rectum     * Liver     * Gallbladder     * Pancreas

Specific Code Blocks for Chapter 11

Diseases of Oral Cavity, Salivary Glands, and Jaws ($K00$ to $K14$)

• 1. $K00$: Disorders of tooth development and eruption.
• 2. $K01$: Embedded impacted teeth.
• 3. $K02$: Dental caries.
• 4. $K03$: Other diseases of hard tissues of teeth.
• 5. $K04$: Diseases of pulp and periapical tissues.
• 6. $K05$: Gingivitis and periodontal diseases.
• 7. $K06$: Other disorders of gingiva and edentulous alveolar ridge.
• 8. $K07$: Dentofacial anomalies including malocclusion.
• 9. $K08$: Other disorders of teeth and supporting structures.
• 10. $K09$: Cysts of oral region not elsewhere classified.
• 11. $K10$: Other diseases of jaws.
• 12. $K11$: Diseases of salivary glands.
• 13. $K12$: Stomatitis and related lesions.
• 14. $K13$: Other diseases of lip and oral mucosa.
• 15. $K14$: Diseases of tongue.

Diseases of Appendix ($K35$ to $K38$)

• 1. $K35$: Acute appendicitis.
• 2. $K36$: Other appendicitis.
• 3. $K37$: Unspecified appendicitis.
• 4. $K38$: Other diseases of appendix.

Hernia ($K40$ to $K46$)

• 1. $K40$: Inguinal hernia.
• 2. $K41$: Femoral hernia.
• 3. $K42$: Umbilical hernia.
• 4. $K43$: Ventral hernia.
• 5. $K44$: Diaphragmatic hernia.
• 6. $K45$: Other abdominal hernia.
• 7. $K46$: Unspecified abdominal hernia.

Other Diseases of Intestines ($K55$ to $K64$)

• 1. $K55$: Vascular disorders of intestine.
• 2. $K56$: Paralytic ileus and intestinal obstruction without hernia.
• 3. $K57$: Diverticular disease of intestine.
• 4. $K58$: Irritable bowel syndrome.
• 5. $K59$: Other functional intestinal disorders.
• 6. $K60$: Fissure and fistula of anal and rectal regions.
• 7. $K61$: Abscess of anal and rectal regions.
• 8. $K62$: Other diseases of anus and rectum.
• 9. $K63$: Other diseases of intestine.
• 10. $K64$: Hemorrhoids and parietal venous thrombosis.

Diseases of Liver ($K70$ to $K77$)

• 1. $K70$: Alcoholic liver disease.
• 2. $K71$: Toxic liver disease.
• 3. $K72$: Hepatic failure not elsewhere classified.
• 4. $K73$: Chronic hepatitis.
• 5. $K74$: Fibrosis and cirrhosis of liver.
• 6. $K75$: Other inflammatory liver diseases.
• 7. $K76$: Other diseases of liver.
• 8. $K77$: Liver disorders and diseases classified elsewhere.

Additional Diseases of the Digestive System ($K90$ to $K93$)

• 1. $K90$: Intestinal malabsorption.
• 2. $K91$: Post procedural disorders of digestive system not elsewhere classified.
• 3. $K92$: Other diseases of digestive system.
• 4. $K93$: Disorders of other digestive organs and diseases classified elsewhere.

Chapter 12: Diseases of the Skin and Subcutaneous Tissue ($L00$ to $L99$)

• The Integumentary System: The skin is a component of the integument, serving as a protective coating for deeper tissues.
• Protective Functions: The integument protects deeper tissues from injury and infection by preventing them from drying out.
• Layers of the Skin and Subcutaneous Tissue:     * Epidermis: The outer layer of the skin. Aged cells degrade and are replaced within this layer.     * Dermis: The layer immediately beneath the epidermis.     * Superficial Fascia: The innermost layer of the integument. It is the tissue layer situated between the skin and the muscles or bones.
• Coding Organization: Skin condition coding is organized into groups for infections, inflammatory ailments, and other diseases.

Specific Code Blocks for Chapter 12

Infections of the Skin and Subcutaneous Tissue ($L00$ to $L08$)

• 1. $L00$: Staphylococcus Skalditz skin.
• 2. $L01$: Impetigo.
• 3. $L02$: Cutaneous abscess, furuncle and carbuncle.
• 4. $L03$: Cellulitis.
• 5. $L04$: Acute lymphadenitis.
• 6. $L05$: pyelomidal cyst.
• 7. $L08$: Other local infections of skin and subcutaneous tissue.

Dermatitis and Eczema ($L20$ to $L30$)

• 1. $L20$: Atopic dermatitis.
• 2. $L21$: Seborrheic dermatitis.
• 3. $L22$: Diaper napkin dermatitis.
• 4. $L23$: Allergic contact dermatitis.
• 5. $L24$: Irritant contact dermatitis.
• 6. $L25$: Unspecified contact dermatitis.
• 7. $L26$: Exfoliative dermatitis.
• 8. $L27$: Dermatitis due to substances taken internally.
• 9. $L28$ and $L$ twenty twenty nine (as referenced in transcript).
• 10. Pruritus.
• 11. $L30$: Other dermatitis.

Other Disorders of the Skin and Subcutaneous Tissue ($L80$ to $L99$)

• 1. $L80$: Vitiligo.
• 2. $L81$: Other disorders of pigmentation.
• 3. $L82$: Seborrheic keratosis.
• 4. $L83$: Acanthosis nigricans.
• 5. $L84$: Corns and callosities.
• 6. $L85$: Other epidermal thickening.
• 7. $L86$: Carotiderma in diseases classified elsewhere.
• 8. $L87$: Trans epidermal elimination disorders.
• 9. $L88$: Pyoderma gangrenism.
• 10. $L89$: dq salsa and pressure area.
• 11. $L90$: Atrophic disorders of skin.
• 12. $L91$: Hypertrophic disorders of skin.
• 13. $L92$: Granulomatous disorders of skin and subcutaneous tissue.
• 14. $L93$: NUPLAZARYTHEMATISUS.
• 15. $L94$: Other localized connective tissue disorders.
• 16. $L95$: Vasculitis limited to skin not elsewhere classified.
• 17. $L97$: Ulcer of lower limb not elsewhere classified.
• 18. $L98$: Other disorders of skin and subcutaneous tissue not elsewhere classified.
• 19. $L99$: Other disorders of skin and subcutaneous tissue in diseases classified elsewhere.